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Publications by Johan Åkerman

Peer reviewed

Articles

[1]
S. Jiang et al., "Magnetic droplet soliton pairs," Nature Communications, vol. 15, no. 1, 2024.
[2]
S. Jana et al., "Atom-specific magnon-driven ultrafast spin dynamics in Fe1-xNix alloys," Physical Review B, vol. 107, no. 18, 2023.
[3]
S. Jiang et al., "Field-Free High-Frequency Exchange-Spring Spin-Torque Nano- Oscillators," Nano Letters, vol. 23, no. 4, pp. 1159-1166, 2023.
[4]
M. Ahlberg et al., "Freezing and thawing magnetic droplet solitons," Nature Communications, vol. 13, no. 1, 2022.
[6]
S. A. H. Banuazizi et al., "Magnetic force microscopy of an operational spin nano-oscillator," MICROSYSTEMS & NANOENGINEERING, vol. 8, no. 1, 2022.
[7]
M. Zahedinejad et al., "Memristive control of mutual spin Hall nano-oscillator synchronization for neuromorphic computing," Nature Materials, vol. 21, no. 1, pp. 81-87, 2022.
[9]
K. Shi et al., "Observation of magnetic droplets in magnetic tunnel junctions," Science China Physics, Mechanics & Astronomy, vol. 65, no. 2, 2022.
[10]
[11]
S. Muralidhar et al., "Femtosecond Laser Pulse Driven Caustic Spin Wave Beams," Physical Review Letters, vol. 126, no. 3, 2021.
[12]
G. Cao et al., "Femtosecond laser driven precessing magnetic gratings," Nanoscale, vol. 13, no. 6, pp. 3746-3756, 2021.
[13]
A. J. Eklund et al., "Impact of intragrain spin wave reflections on nanocontact spin torque oscillators," Physical Review B, vol. 103, no. 21, 2021.
[14]
M. Haidar, S. Isber and J. Åkerman, "Measuring spin wave resonance in Ni100-xFex films : compositional and temperature dependence," Journal of Physics D : Applied Physics, vol. 54, no. 44, 2021.
[15]
X. Xing, J. Åkerman and Y. Zhou, "Enhanced skyrmion motion via strip domain wall," Physical Review B, vol. 101, no. 21, 2020.
[16]
H. Fulara et al., "Giant voltage-controlled modulation of spin Hall nano-oscillator damping," Nature Communications, vol. 11, no. 1, 2020.
[17]
Y. Pogoryelov et al., "Nonreciprocal spin pumping damping in asymmetric magnetic trilayers," Physical Review B, vol. 101, no. 5, 2020.
[18]
B. Dieny et al., "Opportunities and challenges for spintronics in the microelectronics industry," NATURE ELECTRONICS, vol. 3, no. 8, pp. 446-459, 2020.
[19]
S. Jiang et al., "Reduced spin torque nano-oscillator linewidth using He+ irradiation," Applied Physics Letters, vol. 116, no. 7, 2020.
[20]
C. Zheng et al., "Tuning Magnetic Droplets in Nanocontact Spin-Torque Oscillators Using Electric Fields," Physical Review Applied, vol. 14, no. 5, 2020.
[21]
M. Zahedinejad et al., "Two-dimensional mutually synchronized spin Hall nano-oscillator arrays for neuromorphic computing," Nature Nanotechnology, vol. 15, no. 1, pp. 47-52, 2020.
[22]
A. A. Awad et al., "Width dependent auto-oscillating properties of constriction based spin Hall nano-oscillators," Applied Physics Letters, vol. 116, no. 23, 2020.
[23]
M. Haidar et al., "A single layer spin-orbit torque nano-oscillator," Nature Communications, vol. 10, 2019.
[24]
D. I. Albertsson et al., "Compact Macrospin-Based Model of Three-Terminal Spin-Hall Nano Oscillators," IEEE transactions on magnetics, vol. 55, no. 10, 2019.
[25]
T. N. A. Nguyen et al., "Enhanced Perpendicular Exchange Bias in Co/Pd Antidot Arrays," Journal of Electronic Materials, vol. 48, no. 3, pp. 1492-1497, 2019.
[27]
H. Fulara et al., "Spin-orbit torque-driven propagating spin waves," Science Advances, vol. 5, no. 9, 2019.
[29]
M. Fazlali et al., "Tuning exchange-dominated spin-waves using lateral current spread in nanocontact spin-torque nano-oscillators," Journal of Magnetism and Magnetic Materials, vol. 492, pp. 165503, 2019.
[31]
M. Zahedinejad et al., "CMOS compatible W/CoFeB/MgO spin Hall nano-oscillators with wide frequency tunability," Applied Physics Letters, vol. 112, no. 13, 2018.
[32]
S. Chung et al., "Direct Observation of Zhang-Li Torque Expansion of Magnetic Droplet Solitons," Physical Review Letters, vol. 120, no. 21, 2018.
[34]
S. Jiang et al., "Impact of the Oersted Field on Droplet Nucleation Boundaries," IEEE Magnetics Letters, vol. 9, 2018.
[35]
H. Mazraati, M. Zahedinejad and J. Åkerman, "Improving the magnetodynamical properties of NiFe/Pt bilayers through Hf dusting," Applied Physics Letters, vol. 113, no. 9, pp. 092401, 2018.
[36]
D. Tiwari et al., "Influence of MgO barrier quality on spin-transfer torque in magnetic tunnel junctions," Applied Physics Letters, vol. 112, no. 2, 2018.
[38]
S. M. Mohseni et al., "Magnetic droplet soliton nucleation in oblique fields," Physical Review B Condensed Matter, vol. 97, no. 184402, 2018.
[39]
Z. Sheykhifard et al., "Magnetic graphene/Ni-nano-crystal hybrid for small field magnetoresistive effect synthesized via electrochemical exfoliation/deposition technique," Journal of materials science. Materials in electronics, vol. 29, no. 5, pp. 4171-4178, 2018.
[40]
S. A. H. Banuazizi and J. Åkerman, "Microwave probe stations with throw-dimensional control of the magnetic field to study high-frequency dynamic in nanoscale devices," Review of Scientific Instruments, vol. 89, no. 6, 2018.
[41]
M. Dvornik, A. A. Awad and J. Åkerman, "Origin of Magnetization Auto-Oscillations in Constriction-Based Spin Hall Nano-Oscillators," Physical Review Applied, vol. 9, no. 1, 2018.
[42]
T. M. Spicer et al., "Spatial mapping of torques within a spin Hall nano-oscillator," Physical Review B, vol. 98, no. 21, 2018.
[47]
O. Sulymenko et al., "Ultra-fast logic devices using artificial "neurons" based on antiferromagnetic pulse generators," Journal of Applied Physics, vol. 124, no. 15, 2018.
[49]
P. Dürrenfeld et al., "A 20 nm spin Hall nano-oscillator," Nanoscale, vol. 9, no. 3, pp. 1285-1291, 2017.
[52]
D. Tiwari et al., "Antidamping spin-orbit torques in epitaxial-Py(100)/beta-Ta," Applied Physics Letters, vol. 111, no. 23, 2017.
[53]
P. Durrenfeld et al., "Controlled skyrmion nucleation in extended magnetic layers using a nanocontact geometry," Physical Review B, vol. 96, no. 5, 2017.
[54]
M. Zahedinejad et al., "Current Modulation of Nanoconstriction Spin-Hall Nano-Oscillators," IEEE Magnetics Letters, vol. 8, 2017.
[56]
P. S. Keatley et al., "Imaging magnetisation dynamics in nano-contact spin-torque vortex oscillators exhibiting gyrotropic mode splitting," Journal of Physics D : Applied Physics, vol. 50, no. 16, 2017.
[57]
[58]
A. A. Awad et al., "Long-range mutual synchronization of spin Hall nano-oscillators," Nature Physics, vol. 13, no. 3, pp. 292-+, 2017.
[59]
R. Sbiaa et al., "Ni thickness influence on magnetic properties (Co/Ni/Co/Pt) multilayers with perpendicular magnetic anisotropy," Journal of Magnetism and Magnetic Materials, vol. 441, pp. 585-589, 2017.
[60]
S. A. H. Banuazizi et al., "Order of magnitude improvement of nano-contact spin torque nano-oscillator performance," Nanoscale, vol. 9, no. 5, pp. 1896-1900, 2017.
[61]
D. Xiao et al., "Parametric autoexcitation of magnetic droplet soliton perimeter modes," Physical Review B, vol. 95, no. 2, 2017.
[62]
X. Xing et al., "Paving Spin-Wave Fibers in Magnonic Nanocircuits Using Spin-Orbit Torque," Physical Review Applied, vol. 7, no. 5, 2017.
[63]
[66]
M. Haidar et al., "Controlling Gilbert damping in a YIG film using nonlocal spin currents," Physical Review B, vol. 94, no. 18, 2016.
[67]
P. S. Keatley et al., "Direct observation of magnetization dynamics generated by nanocontact spin-torque vortex oscillators," Physical Review B - Condensed Matter and Materials Physics, vol. 94, no. 6, 2016.
[69]
R. Sbiaa et al., "Ferromagnetic resonance measurements of (Co/Ni/Co/Pt) multilayers with perpendicular magnetic anisotropy," Journal of Physics D : Applied Physics, vol. 49, no. 42, 2016.
[71]
E. O. B. Parra et al., "Holographic Magnetic Imaging of Single-Layer Nanocontact Spin-Transfer Oscillators," IEEE transactions on magnetics, vol. 52, no. 7, 2016.
[73]
H. Mazraati et al., "Low operational current spin Hall nano-oscillators based on NiFe/W bilayers," Applied Physics Letters, vol. 109, no. 24, 2016.
[75]
[76]
S. M. Mohseni et al., "Magnetostatically driven domain replication in Ni/Co based perpendicular pseudo-spin-valves," Journal of Physics D : Applied Physics, vol. 49, no. 41, 2016.
[77]
D. Xiao et al., "Merging droplets in double nanocontact spin torque oscillators," Physical Review B, vol. 93, no. 9, 2016.
[79]
T. Chen et al., "Spin-Torque and Spin-Hall Nano-Oscillators," Proceedings of the IEEE, vol. 104, no. 10, pp. 1919-1945, 2016.
[80]
A. Houshang et al., "Spin-wave-beam driven synchronization of nanocontact spin-torque oscillators," Nature Nanotechnology, vol. 11, no. 3, pp. 280-+, 2016.
[81]
P. S. Keatley et al., "Superharmonic injection locking of nanocontact spin-torque vortex oscillators," Physical Review B, vol. 94, no. 9, 2016.
[82]
A. F. Franco et al., "Variable variance Preisach model for multilayers with perpendicular magnetic anisotropy," PHYSICAL REVIEW B, vol. 94, no. 6, 2016.
[83]
I. Zubritskaya et al., "Active Magnetoplasmonic Ruler," Nano letters (Print), vol. 15, no. 5, pp. 3204-3211, 2015.
[84]
M. Moradi et al., "Au/NiFe Magnetoplasmonics : Large Enhancement of Magneto-Optical Kerr Effect for Magnetic Field Sensors and Memories," Electronic Materials Letters, vol. 11, no. 3, pp. 440-446, 2015.
[85]
T. Chen et al., "Comprehensive and Macrospin-Based Magnetic Tunnel Junction Spin Torque Oscillator Model-Part I : Analytical Model of the MTJ STO," IEEE Transactions on Electron Devices, vol. 62, no. 3, pp. 1037-1044, 2015.
[86]
T. Chen et al., "Comprehensive and Macrospin-Based Magnetic Tunnel Junction Spin Torque Oscillator Model-Part II : Verilog-A Model Implementation," IEEE Transactions on Electron Devices, vol. 62, no. 3, pp. 1045-1051, 2015.
[87]
R. Sbiaa, M. Ranjbar and J. Åkerman, "Domain structures and magnetization reversal in Co/Pd and CoFeB/Pd multilayers," Journal of Applied Physics, vol. 117, no. 17, 2015.
[88]
Y. Zhou et al., "Dynamically stabilized magnetic skyrmions," Nature Communications, vol. 6, 2015.
[89]
C. Morrison et al., "Exchange coupling in hybrid anisotropy magnetic multilayers quantified by vector magnetometry," Journal of Applied Physics, vol. 117, no. 17, 2015.
[90]
Y. Wei et al., "Exponentially decaying magnetic coupling in sputtered thin film FeNi/Cu/FeCo trilayers," Applied Physics Letters, vol. 106, no. 4, 2015.
[91]
T. Chen et al., "Integration of GMR-based spin torque oscillators and CMOS circuitry," Solid-State Electronics, vol. 111, pp. 91-99, 2015.
[92]
S. Chung et al., "Magnetic droplet solitons in orthogonal spin valves," Low temperature physics (Woodbury, N.Y., Print), vol. 41, no. 10, pp. 833-837, 2015.
[93]
S. Chung et al., "Magnetic droplet solitons in orthogonal spin valves," Fizika Nizkih Temperatur, vol. 41, no. 10, pp. 1063-1068, 2015.
[94]
L. Tryputen et al., "Magnetic structure and anisotropy of [Co/Pd](5)/NiFe multilayers," Physical Review B. Condensed Matter and Materials Physics, vol. 91, no. 1, pp. 014407, 2015.
[95]
E. Iacocca et al., "Mode-coupling mechanisms in nanocontact spin-torque oscillators," Physical Review B. Condensed Matter and Materials Physics, vol. 91, no. 10, 2015.
[96]
R. Sharma et al., "Modulation Rate Study in a Spin-Torque Oscillator-Based Wireless Communication System," IEEE transactions on magnetics, vol. 51, no. 11, 2015.
[97]
F. Qejvanaj et al., "Planar Hall-Effect Bridge Sensor With NiFeX (X = Cu, Ag, and Au) Sensing Layer," IEEE transactions on magnetics, vol. 51, no. 11, 2015.
[98]
M. Madami et al., "Propagating spin waves excited by spin-transfer torque : A combined electrical and optical study," Physical Review B. Condensed Matter and Materials Physics, vol. 92, no. 2, 2015.
[99]
S. Mukherjee et al., "Role of boron diffusion in CoFeB/MgO magnetic tunnel junctions," Physical Review B. Condensed Matter and Materials Physics, vol. 91, no. 8, 2015.
[100]
P. Dürrenfeld et al., "Spin Hall effect-controlled magnetization dynamics in NiMnSb," Journal of Applied Physics, vol. 117, no. 17, 2015.
[103]
M. Haidar et al., "Thickness- and temperature-dependent magnetodynamic properties of yttrium iron garnet thin films," Journal of Applied Physics, vol. 117, no. 17, 2015.
[104]
P. Durrenfeld et al., "Tunable damping, saturation magnetization, and exchange stiffness of half-Heusler NiMnSb thin films," Physical Review B. Condensed Matter and Materials Physics, vol. 92, no. 21, 2015.
[105]
Y. Yin et al., "Tunable permalloy-based films for magnonic devices," Physical Review B. Condensed Matter and Materials Physics, vol. 92, no. 2, 2015.
[107]
T. Chen et al., "A highly tunable microwave oscillator based on MTJ STO technology," Microwave and optical technology letters (Print), vol. 56, no. 9, pp. 2092-2095, 2014.
[108]
R. K. Dumas et al., "Accessing different spin-disordered states using first-order reversal curves," Physical Review B. Condensed Matter and Materials Physics, vol. 90, no. 10, pp. 104410, 2014.
[109]
M. Ranjbar et al., "CoFeB-Based Spin Hall Nano-Oscillators," IEEE Magnetics Letters, vol. 5, pp. 3000504, 2014.
[110]
E. Iacocca et al., "Confined Dissipative Droplet Solitons in Spin-Valve Nanowires with Perpendicular Magnetic Anisotropy," Physical Review Letters, vol. 112, no. 4, pp. 047201, 2014.
[111]
A. Eklund et al., "Dependence of the colored frequency noise in spin torque oscillators on current and magnetic field," Applied Physics Letters, vol. 104, no. 9, pp. 092405, 2014.
[112]
T. N. A. Nguyen et al., "Depth-Dependent Magnetization Profiles of Hybrid Exchange Springs," PHYS REV APPL, vol. 2, no. 4, pp. 044014, 2014.
[113]
A. Houshang et al., "Effect of Excitation Fatigue on the Synchronization of Multiple Nanocontact Spin-Torque Oscillators," IEEE Magnetics Letters, vol. 5, pp. 3000404, 2014.
[114]
N. Najmoddin et al., "Effect of nanoconfinement on the formation, structural transition and magnetic behavior of mesoporous copper ferrite," Journal of Alloys and Compounds, vol. 598, pp. 191-197, 2014.
[115]
N. Maccaferri et al., "Effects of a non-absorbing substrate on the magneto-optical Kerr response of plasmonic ferromagnetic nanodisks," Physica Status Solidi (a) applications and materials science, vol. 211, no. 5, pp. 1067-1075, 2014.
[116]
E. Iacocca et al., "Generation linewidth of mode-hopping spin torque oscillators," Physical Review B. Condensed Matter and Materials Physics, vol. 89, no. 5, pp. 054402, 2014.
[117]
V. Puliafito et al., "Hysteretic Synchronization in Spin-Torque Nanocontact Oscillators : A Micromagnetic Study," IEEE transactions on nanotechnology, vol. 13, no. 3, pp. 532-536, 2014.
[118]
T. N. A. Nguyen et al., "Investigation of the Tunability of the Spin Configuration Inside Exchange Coupled Springs of Hard/Soft Magnets," IEEE transactions on magnetics, vol. 50, no. 6, pp. 2004906, 2014.
[119]
T. Zeng et al., "Linear Phase Tuning of Spin Torque Oscillators Using In-Plane Microwave Fields," IEEE transactions on magnetics, vol. 50, no. 1, pp. 1400104, 2014.
[120]
S. M. Mohseni et al., "Magnetic droplet solitons in orthogonal nano-contact spin torque oscillators," Physica. B, Condensed matter, vol. 435, pp. 84-87, 2014.
[121]
N. Najmoddin et al., "Magnetic properties of crystalline mesoporous Zn-substituted copper ferrite synthesized under nanoconfinement in silica matrix," Microporous and Mesoporous Materials, vol. 190, pp. 346-355, 2014.
[122]
K. Lodewijks et al., "Magnetoplasmonic Design Rules for Active Magneto-Optics," Nano letters (Print), vol. 14, no. 12, pp. 7207-7214, 2014.
[123]
R. Sharma et al., "Mode-hopping mechanism generating colored noise in a magnetic tunnel junction based spin torque oscillator," Applied Physics Letters, vol. 105, no. 13, pp. 132404, 2014.
[124]
P. Dürrenfeld et al., "Modulation-mediated unlocking of a parametrically phase-locked spin torque oscillator," Applied Physics Letters, vol. 105, no. 25, pp. 252404, 2014.
[125]
S. Kamali et al., "Oxidation states and quality of upper interfaces in magnetic tunnel junctions : oxygen effect on crystallization of interfaces," Journal of Physics : Condensed Matter, vol. 26, no. 2, pp. 026004, 2014.
[126]
P. Durrenfeld et al., "Parametric excitation in a magnetic tunnel junction-based spin torque oscillator," Applied Physics Letters, vol. 104, no. 5, pp. 052410, 2014.
[127]
R. K. Dumas et al., "Recent Advances in Nanocontact Spin-Torque Oscillators," IEEE transactions on magnetics, vol. 50, no. 6, pp. 4100107, 2014.
[128]
M. Ranjbar et al., "Spin reorientation via antiferromagnetic coupling," Journal of Applied Physics, vol. 115, no. 17, pp. 4852076, 2014.
[129]
S. Chung et al., "Spin transfer torque generated magnetic droplet solitons (invited)," Journal of Applied Physics, vol. 115, no. 17, pp. 172612, 2014.
[130]
R. L. Stamps et al., "The 2014 Magnetism Roadmap," Journal of Physics D : Applied Physics, vol. 47, no. 33, pp. 333001, 2014.
[131]
F. Qejvanaj et al., "Thick Double-Biased IrMn/NiFe/IrMn Planar Hall Effect Bridge Sensors," IEEE transactions on magnetics, vol. 50, no. 11, 2014.
[132]
N. Najmoddin et al., "XRD cation distribution and magnetic properties of mesoporous Zn-substituted CuFe2O4," Ceramics International, vol. 40, no. 2, pp. 3619-3625, 2014.
[133]
S. Tacchi et al., "[Co/Pd]-CoFeB exchange spring magnets with tunable gap of spin wave excitations," Journal of Physics D : Applied Physics, vol. 47, no. 49, pp. 495004, 2014.
[134]
Y. Fang et al., "A Nonvolatile Spintronic Memory Element with a Continuum of Resistance States," Advanced Functional Materials, vol. 23, no. 15, pp. 1919-1922, 2013.
[135]
O. G. Heinonen et al., "Decoherence, Mode Hopping, and Mode Coupling in Spin Torque Oscillators," IEEE transactions on magnetics, vol. 49, no. 7, pp. 4398-4404, 2013.
[136]
S. Redjai Sani et al., "Microwave Signal Generation in Single-Layer Nano-Contact Spin Torque Oscillators," IEEE transactions on magnetics, vol. 49, no. 7, pp. 4331-4334, 2013.
[137]
S. Redjai Sani et al., "Mutually synchronized bottom-up multi-nanocontact spin-torque oscillators," Nature Communications, vol. 4, pp. 2731, 2013.
[138]
G. Consolo et al., "Non-stationary excitation of two localized spin-wave modes in a nano-contact spin torque oscillator," Journal of Applied Physics, vol. 114, no. 15, pp. 153906, 2013.
[139]
S. Kamali et al., "Oxidation states and the quality of lower interfaces in magnetic tunnel junctions : oxygen effect on crystallization of interfaces," Journal of Physics : Condensed Matter, vol. 25, no. 13, pp. 135302, 2013.
[140]
N. Maccaferri et al., "Polarizability and magnetoplasmonic properties of magnetic general nanoellipsoids," Optics Express, vol. 21, no. 8, pp. 9875-9889, 2013.
[141]
E. Iacocca and J. Åkerman, "Resonant excitation of injection-locked spin-torque oscillators," Physical Review B. Condensed Matter and Materials Physics, vol. 87, no. 21, pp. 214428, 2013.
[142]
J. E. Davies et al., "Reversal mode instability and magnetoresistance in perpendicular (Co/Pd)/Cu/(Co/Ni) pseudo-spin-valves," Applied Physics Letters, vol. 103, no. 2, pp. 022409, 2013.
[143]
S. M. Mohseni et al., "Spin Torque-Generated Magnetic Droplet Solitons," Science, vol. 339, no. 6125, pp. 1295-1298, 2013.
[144]
S. Tacchi et al., "Spin wave excitations in exchange-coupled [Co/Pd]-NiFe films with tunable tilting of the magnetization," Physical Review B. Condensed Matter and Materials Physics, vol. 87, no. 14, pp. 144426, 2013.
[145]
R. K. Dumas et al., "Spin-Wave-Mode Coexistence on the Nanoscale : A Consequence of the Oersted-Field-Induced Asymmetric Energy Landscape," Physical Review Letters, vol. 110, no. 25, pp. 257202, 2013.
[146]
S. Chung et al., "Tunable spin configuration in [Co/Ni]-NiFe spring magnets," Journal of Physics D : Applied Physics, vol. 46, no. 12, pp. 125004, 2013.
[147]
N. Maccaferri et al., "Tuning the Magneto-Optical Response of Nanosize Ferromagnetic Ni Disks Using the Phase of Localized Plasmons," Physical Review Letters, vol. 111, no. 16, pp. 167401, 2013.
[148]
E. Iacocca and J. Åkerman, "Analytical investigation of modulated spin-torque oscillators in the framework of coupled differential equations with variable coefficients," Physical Review B. Condensed Matter and Materials Physics, vol. 85, no. 18, pp. 184420, 2012.
[149]
Y. Pogoryelov, P. K. Muduli and J. Åkerman, "Combined wide-narrow double modulation of spin-torque oscillators for improved linewidth during communication," IEEE transactions on magnetics, vol. 48, no. 11, pp. 4077-4080, 2012.
[150]
P. K. Muduli, O. G. Heinonen and J. Åkerman, "Decoherence and Mode Hopping in a Magnetic Tunnel Junction Based Spin Torque Oscillator," Physical Review Letters, vol. 108, no. 20, pp. 207203, 2012.
[151]
Y. Zhou et al., "Macrospin and micromagnetic studies of tilted polarizer spin-torque nano-oscillators," Journal of Applied Physics, vol. 112, no. 6, pp. 063903, 2012.
[152]
S. Bonetti et al., "Power and linewidth of propagating and localized modes in nanocontact spin-torque oscillators," Physical Review B. Condensed Matter and Materials Physics, vol. 85, no. 17, pp. 174427, 2012.
[153]
J. Persson et al., "Spin-Torque Oscillator in an Electromagnet Package," IEEE transactions on magnetics, vol. 48, no. 11, pp. 4378-4381, 2012.
[154]
P. K. Muduli, O. G. Heinonen and J. Åkerman, "Temperature dependence of linewidth in nanocontact based spin torque oscillators : Effect of multiple oscillatory modes," Physical Review B. Condensed Matter and Materials Physics, vol. 86, no. 17, pp. 174408, 2012.
[155]
Y. Fang et al., "Utility of reactively sputtered CuNx films in spintronics devices," Journal of Applied Physics, vol. 111, no. 7, pp. 073912, 2012.
[156]
T. N. A. Nguyen et al., "[Co/Pd](4)-Co-Pd-NiFe spring magnets with highly tunable and uniform magnetization tilt angles," Journal of Magnetism and Magnetic Materials, vol. 324, no. 22, pp. 3929-3932, 2012.
[157]
Y. Fang et al., "An In Situ anneal study of graded anisotropy FePtCu films," IEEE Magnetics Letters, vol. 2, 2011.
[158]
P. K. Muduli, O. G. Heinonen and J. Åkerman, "Bias dependence of perpendicular spin torque and of free- and fixed-layer eigenmodes in MgO-based nanopillars," Physical Review B - Condensed Matter and Materials Physics, vol. 83, no. 18, 2011.
[159]
S. R. Sani et al., "Current induced vortices in multi-nanocontact spin-torque devices," Journal of Applied Physics, vol. 109, no. 7, pp. 07C913, 2011.
[160]
V. Bonanni et al., "Designer Magnetoplasmonics with Nickel Nanoferromagnets," Nano letters (Print), vol. 11, no. 12, pp. 5333-5338, 2011.
[161]
E. Iacocca and J. Åkerman, "Destabilization of serially connected spin-torque oscillators via non-Adlerian dynamics," Journal of Applied Physics, vol. 110, no. 10, pp. 103910, 2011.
[162]
Y. Pogoryelov et al., "Frequency modulation of spin torque oscillator pairs," Applied Physics Letters, vol. 98, no. 19, pp. 192501, 2011.
[163]
R. K. Dumas et al., "Graded Anisotropy FePtCu Films," IEEE transactions on magnetics, vol. 47, no. 6, pp. 1580-1586, 2011.
[164]
S. M. Mohseni et al., "High frequency operation of a spin-torque oscillator at low field," Physica Status Solidi. Rapid Research Letters, vol. 5, no. 12, pp. 432-434, 2011.
[165]
P. K. Muduli, O. G. Heinonen and J. Åkerman, "Intrinsic frequency doubling in a magnetic tunnel junction-based spin torque oscillator," Journal of Applied Physics, vol. 110, no. 7, pp. 076102, 2011.
[166]
Y. Zhou, J. Åkerman and J. Z. Sun, "Micromagnetic study of switching boundary of a spin torque nanodevice," Applied Physics Letters, vol. 98, no. 10, pp. 102501, 2011.
[167]
P. Muduli et al., "Modulation of Individual and Mutually Synchronized Nanocontact-Based Spin Torque Oscillators," IEEE transactions on magnetics, vol. 47, no. 6, pp. 1575-1579, 2011.
[168]
C. Zha et al., "Nanostructured MnGa films on Si/SiO(2) with 20.5 kOe room temperature coercivity," Journal of Applied Physics, vol. 110, no. 9, pp. 093902, 2011.
[169]
J. Chen et al., "Plasmonic Nickel Nanoantennas," SMALL, vol. 7, no. 16, pp. 2341-2347, 2011.
[170]
R. K. Dumas et al., "Probing vertically graded anisotropy in FePtCu films," Physical Review B. Condensed Matter and Materials Physics, vol. 84, no. 5, pp. 054434, 2011.
[171]
P. K. Muduli et al., "Spin Torque Oscillators and RF Currents-Modulation, Locking, and Ringing," Integrated Ferroelectrics, vol. 125, pp. 147-154, 2011.
[172]
Y. Pogoryelov et al., "Spin-torque oscillator linewidth narrowing under current modulation," Applied Physics Letters, vol. 98, no. 19, pp. 192506, 2011.
[173]
S. M. Mohseni et al., "Temperature-dependent interlayer coupling in Ni/Co perpendicular pseudo-spin-valve structures," Physical Review B. Condensed Matter and Materials Physics, vol. 84, no. 17, pp. 174432, 2011.
[174]
T. N. A. Nguyen et al., "[Co/Pd]-NiFe exchange springs with tunable magnetization tilt angle," Applied Physics Letters, vol. 98, no. 17, pp. 172502, 2011.
[175]
C. Zha et al., "Continuously graded anisotropy in single (Fe53Pt47)(100-x)Cu-x films," Applied Physics Letters, vol. 97, no. 18, pp. 182504, 2010.
[177]
V. Bonanni et al., "First-order reversal curve analysis of graded anisotropy FePtCu films," Applied Physics Letters, vol. 97, no. 20, pp. 202501, 2010.
[178]
J. Tian et al., "Nanowaveguides and couplers based on hybrid plasmonic modes," Applied Physics Letters, vol. 97, no. 23, pp. 231121, 2010.
[179]
P. Muduli et al., "Nonlinear frequency and amplitude modulation of a nanocontact-based spin-torque oscillator," Physical Review B. Condensed Matter and Materials Physics, vol. 81, no. 14, 2010.
[180]
Y. Zhou et al., "Oscillatory transient regime in the forced dynamics of a nonlinear auto oscillator," Physical Review B. Condensed Matter and Materials Physics, vol. 82, no. 1, pp. 012408, 2010.
[181]
C. Zha et al., "Pseudo spin valves using a (112)-Textured D022 Mn2.3-2.4Ga fixed layer," IEEE Magnetics Letters, vol. 1, pp. 2500104, 2010.
[182]
[183]
Y. Zhou et al., "Capacitance Effect on Microwave Power Spectra of Spin-Torque Oscillator With Thermal Noise," IEEE transactions on magnetics, vol. 45, no. 6, pp. 2773-2776, 2009.
[184]
Y. Zhou et al., "Capacitance Enhanced Synchronization of Pairs of Spin-Transfer Oscillators," IEEE transactions on magnetics, vol. 45, no. 6, pp. 2421-2423, 2009.
[185]
C. Zha, J. Nogués and J. Åkerman, "Exchange Bias in L1(0) (111)-Oriented FePt-Based Pseudo Spin Valves," IEEE transactions on magnetics, vol. 45, no. 10, pp. 3881-3884, 2009.
[187]
Y. Zhou et al., "Microwave generation of tilted-polarizer spin torque oscillator," Journal of Applied Physics, vol. 105, no. 7, pp. 07D116, 2009.
[188]
Y. Zhou and J. Åkerman, "Perpendicular spin torque promotes synchronization of magnetic tunnel junction based spin torque oscillators," Applied Physics Letters, vol. 94, no. 11, pp. 112503, 2009.
[189]
C. Zha et al., "Pseudo spin valves based on L10 (111)-oriented FePt fixed layers with tilted anisotropy," Applied Physics Letters, vol. 94, no. 16, pp. 163108, 2009.
[190]
C. Zha et al., "Pseudo-spin-valve with L1(0) (111)-oriented FePt fixed layer," Journal of Applied Physics, vol. 105, no. 7, pp. 07E910, 2009.
[191]
[192]
C. Zha and J. Åkerman, "Study of Pseudo Spin Valves Based on L1(0) (111)-Oriented FePt and FePtCu Fixed Layer With Tilted Magnetocrystalline Anisotropy," IEEE transactions on magnetics, vol. 45, no. 10, pp. 3491-3494, 2009.
[194]
Y. Zhou et al., "Spin-torque oscillator with tilted fixed layer magnetization," Applied Physics Letters, vol. 92, no. 26, pp. 262508, 2008.
[195]
C. W. Miller et al., "Temperature and angular dependences of dynamic spin-polarized resonant tunneling in CoFeB/MgO/NiFe junctions," Journal of Applied Physics, vol. 103, no. 7, pp. 07A904, 2008.
[196]
Y. Zhou et al., "Tunable intrinsic phase of a spin torque oscillator," Applied Physics Letters, vol. 92, no. 9, pp. 092505, 2008.
[197]
C. W. Miller et al., "Dynamic spin-polarized resonant tunneling in magnetic tunnel junctions," Physical Review Letters, vol. 99, no. 4, 2007.
[198]
C. W. Miller et al., "Impact of interfacial roughness on tunneling conductance and extracted barrier parameters," Applied Physics Letters, vol. 90, no. 4, 2007.
[199]
Y. Zhou, J. Persson and J. Åkerman, "Intrinsic phase shift between a spin torque oscillator and an alternating current," Journal of Applied Physics, vol. 101, no. 9, pp. 09A510, 2007.
[200]
J. Persson, Y. Zhou and J. Åkerman, "Phase-locked spin torque oscillators : Impact of device variability and time delay," Journal of Applied Physics, vol. 101, no. 9, pp. 09A503, 2007.
[201]
J. Åkerman et al., "Separation of exchange anisotropy and magnetocrystalline anisotropy in Co/CoO bilayers by means of ac susceptibility measurements," Physical Review B. Condensed Matter and Materials Physics, vol. 76, no. 14, 2007.
[202]
J. Åkerman et al., "Intrinsic reliability of AlOx-based magnetic tunnel junctions," IEEE transactions on magnetics, vol. 42, no. 10, pp. 2661-2663, 2006.
[203]
R. W. Dave et al., "MgO-based tunnel junction material for high-speed toggle magnetic random access memory," IEEE transactions on magnetics, vol. 42, no. 8, pp. 1935-1939, 2006.
[204]
C. W. Miller et al., "Origin of the breakdown of Wentzel-Kramers-Brillouin-based tunneling models," Physical Review B. Condensed Matter and Materials Physics, vol. 74, no. 21, 2006.
[205]
B. N. Engel et al., "A 4-mb toggle MRAM based on a novel bit and switching method," IEEE transactions on magnetics, vol. 41, no. 1, pp. 132-136, 2005.
[206]
J. Åkerman et al., "Demonstrated reliability of 4-Mb MRAM," IEEE transactions on device and materials reliability, vol. 4, no. 3, pp. 428-435, 2004.
[207]
M. I. Montero et al., "Flux pinning by regular nanostructures in Nb thin films : Magnetic vs. structural effects," Europhysics letters, vol. 63, no. 1, pp. 118-124, 2003.
[208]
J. Åkerman et al., "Origin of temperature dependence in tunneling magnetoresistance," Europhysics letters, vol. 63, no. 1, pp. 104-110, 2003.
[209]
X. Batlle et al., "The oxidation state at tunnel junction interfaces," Journal of Magnetism and Magnetic Materials, vol. 260, no. 02-jan, pp. 78-83, 2003.
[210]
J. Åkerman and K. V. Rao, "Collective dynamics of a highly dilute vortex lattice in YBa2Cu3O7-delta thin films," Physical Review B. Condensed Matter and Materials Physics, vol. 65, no. 13, 2002.
[211]
J. Åkerman et al., "Criteria for ferromagnetic-insulator-ferromagnetic tunneling," Journal of Magnetism and Magnetic Materials, vol. 240, no. 03-jan, pp. 86-91, 2002.
[212]
J. Åkerman and K. V. Rao, "Dynamics of dilute vortices in various high-T-C thin films," Journal of Applied Physics, vol. 91, no. 10, pp. 7137-7139, 2002.
[213]
O. M. Stoll et al., "Hysteresis and fractional matching in thin Nb films with rectangular arrays of nanoscaled magnetic dots," Physical Review B. Condensed Matter and Materials Physics, vol. 65, no. 10, 2002.
[214]
J. Åkerman and K. V. Rao, "Low-field vortex dynamics in various high-T-c thin films," Pramana (Bangalore), vol. 58, no. 06-maj, pp. 985-993, 2002.
[215]
X. Batlle et al., "Quantitative x-ray photoelectron spectroscopy study of Al/AlOx bilayers," Journal of Applied Physics, vol. 91, no. 12, pp. 10163-10168, 2002.
[216]
J. Åkerman et al., "Upper bound for the magnetic proximity effect extracted from Brillouin light scattering," Physical Review B. Condensed Matter and Materials Physics, vol. 65, no. 10, 2002.
[217]
J. Åkerman et al., "Re-entrant behavior of low-field flux creep in c-axis-oriented HgBa2CaCu2O6+delta thin films," Physical Review B Condensed Matter, vol. 6418, no. 18, 2001.
[218]
J. Åkerman et al., "Tunneling criteria for magnetic-insulator-magnetic structures," Applied Physics Letters, vol. 79, no. 19, pp. 3104-3106, 2001.

Conference papers

[219]
S. Banuazizi et al., "Order of magnitude improvement of nano-contact spin torque nano-oscillator performance," in 2017 IEEE International Magnetics Conference, INTERMAG 2017, 2017.
[220]
P. S. Keatley et al., "Magneto-optical observation of mutual phase-locking in a pair of spin-torque vortex oscillators," in 2015 IEEE International Magnetics Conference, INTERMAG 2015, 2015.
[221]
T. Chen et al., "An Inductorless Wideband Balun-LNA for Spin Torque Oscillator-based Field Sensing," in Electronics, Circuits and Systems (ICECS), 2014 21st IEEE International Conference on, 2014, pp. 36-39.
[222]
A. J. Eklund et al., "Triple mode-jumping in a spin torque oscillator," in 2013 22nd International Conference on Noise and Fluctuations, ICNF 2013, 2013, p. 6578965.
[223]
A. Eklund et al., "1/f and white frequency noise in a synchronized spin torque oscillator pair," in 56th Annual Conference on Magnetism and Magnetic Materials, 2011, pp. 504-504.
[224]
C. Zha et al., "Exchange-bias-like effect in L1(0) (111) FePt based pseudo spin valves," in INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009), 2010, p. UNSP 072110.
[225]
Y. Fang et al., "FORC studies of exchange biased NiFe in L1(0)(111) FePt-based spin valve," in INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009), 2010, p. 072002.
[226]
S. R. Sani et al., "Hole mask colloidal lithography on magnetic multilayers for spin torque applications," in INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009), 2010, p. UNSP 072078.
[227]
Y. Pogoryelov and J. Åkerman, "Manifestation of Spin-Hall Effect in Multilayered M/N/M Film Structures," in INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009), 2010, p. UNSP 052023.
[228]
P. Muduli et al., "Modulation of single and double spin torque oscillators," in INTERNATIONAL CONFERENCE ON MAGNETIC MATERIALS (ICMM-2010), 2010, pp. 318-321.
[229]
C. Zha and J. Åkerman, "Pseudo spin valves based on L1(0) (111)-oriented FePt and FePtCu fixed layer with tilted anisotropy," in INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009), 2010, p. UNSP 052036.
[230]
Y. Zhou, J. Persson and J. Åkerman, "Impact of Magnetoresistance and Anisotropy on Synchronized Spin Torque Oscillators," in 2007 7th IEEE Conference On Nanotechnology, Vol 1-3, 2007, pp. 233-236.
[231]
Y. Zhou, J. Persson and J. Åkerman, "Tunable Intrinsic Phase Shift Between a Spin Torque Nano-Oscillator and an AC Current," in 2007 7th IEEE Conference On Nanotechnology, Vol 1-3, 2007, pp. 229-232.
[232]
J. Åkerman et al., "Intrinsic reliability of AlOx-based magnetic tunnel junctions," in INTERMAG 2006 - IEEE International Magnetics Conference; San Diego, CA; United States; 8 May 2006 through 12 May 2006, 2006.

Chapters in books

[233]
J. Åkerman, "Spin Transfer Torque Driven Magnetodynamical Solitons," in Topology in Magnetism, : Springer Science and Business Media Deutschland GmbH, 2018, pp. 335-356.
[234]
S. Bonetti and J. Åkerman, "Nano-Contact Spin-Torque Oscillators as Magnonic Building Blocks," in Magnonics : From Fundamentals to Applications, : Springer Berlin/Heidelberg, 2013, pp. 177-187.

Non-peer reviewed

Articles

[235]
S. Roche et al., "Graphene spintronics : the European Flagship perspective," Current Opinion in Chemical Engineering, vol. 2, no. 3, 2015.
[236]
R. Sharma et al., "Modulation rate study in spin torque oscillator based wireless communication system," 2015 IEEE MAGNETICS CONFERENCE (INTERMAG), 2015.

Conference papers

[237]
F. Qejvanaj et al., "Planar Hall Effect Bridge sensor with NiFeX (X = Cu, Ag and Au) sensing layer.," in IEEE International Magnetics Conference (Intermag), MAY 11-15, 2015, Beijing, PEOPLES R CHINA, 2015.

Other

[247]
S. A. H. Banuazizi et al., "Magnetic force microscopy of an operational nanodevice," (Manuscript).
[251]
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