Alexander Edström
RESEARCHER
Researcher
About me
I use first principles theory and electronic structure calculations to investigate the properties of materials, particularly magnetism and magnetic materials. Recently, I am interested in strain gradient or curvature induced magnetic phenomena (flexomagnetism).
I recieved my PhD at the Uppsala University, division for Materials Theory, in 2016, with a thesis focused on first principles theory of magnetic materials. After that I spent three years as postdoctoral researcher at the ETH Zürich in Switzerland, where I studied novel phenomena in multiferroic materials. Next, I started my current research direction of flexomagnetism, as VR International Postdoc hosted at KTH and Institut de Ciencia de Materials de Barcelona (ICMABCSIC) in Barcelona, Spain.
My publications are listed on Google Scholar.
I participate in the Method Development for Materials Design (MD2) project of the Swedish eScience Research Centre (SeRC).
I also participate in the Wallenberg Initiative Materials Science for Sustainability (WISE) through the WISE/WASP joint program, together with Pawel Herman and Madhura Marathe.
Research Interests



Selected Publications

A. Edström, et al., Phys. Rev. Lett. 128, 177202 (2022)  Curved Magnetism in CrI3
Selected as Editor's Suggestion
We used advanced, relativistic density functional theory (DFT) calculations, including noncollinear spins, to investigate the flexomagnetic coupling between magnetism and curvature in the 2D magnet CrI3. The results show that curvature drastically changes the magnetic state of the material, from a ferromagnetic outofplane magnetization in the flat monolayer, to a cycloidal spin state in the curved case. This is explained in terms of a curvature induced Dzyaloshinskii–Moriya type interaction and changes to the magnetic anisotropy. The results pave the way for using curvature to induce and control complex magnetism in 2D magnets. 
A. Edström, C. Ederer, Phys. Rev. Lett. 124, 167201 (2020)  Prediction of a Giant Magnetoelectric CrossCaloric Effect around a Tetracritical Point in Multiferroic SrMnO\(_3\)
We showed, computationally, that strain engineering perovskite SrMnO\(_3\) into its multiferroic phase, allows for a novel and large crosscaloric effect. Here, this implies that a strong magnetoelectric coupling enables the magnetic entropy change to greatly enhance the electrocaloric effect. Caloric effects are promising for developing new, energy efficient refrigeration technologies. 
A. Edström, A. Lubk, and J. Rusz, Phys. Rev. Lett.116, 127203 (2016)  Elastic Scattering of Electron Vortex Beams in Magnetic Matter
After developing new computational methods to describe electron scattering processes in magnetic materials, we applied these to study the scattering of, so called, electron vortex beams in magnetic solids, paving the way for novel highresolution imaging techniques of magnetism using transmission electron microscopy (TEM). 
A. Edström et al., Phys. Rev. B92, 174413 (2015)  Magnetic properties of\((\mathrm{Fe}_{1x}\mathrm{Co}_{x})_2\mathrm{B}\) alloys and the effect of doping by 5d elements
Collaborating with experimental colleagues, we showed that small amounts of 5ddopants can drastically alter the magnetic anistropy of the 3dtransition metal magnet\((\mathrm{Fe}_{1x}\mathrm{Co}_{x})_2\mathrm{B}\). This is a result of utmost importance to the design of new permanent magnet materials, which are crucial for green energy production (motors and generators for wind power, electric vehicles etc.).\(\)
Courses
Classical Physics (SK1104), assistant  Course web
Elementary Physics (SK1151), teacher, assistant  Course web
Solid State Physics (SK2758), teacher, assistant  Course web