Dmytro Polishchuk

About me

Postdoctoral researcher at Nanostructure Physics, Department of Applied Physics

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Research ID: ORCID, ResearcherID, Scopus Author ID, Google Scholar, ResearchGate

My research activity on nanostructured magnetic materials started during my MSc and PhD at the Institute of Magnetism of NASU (Kyiv, Ukraine) with the experimental investigations into nanoscale magnetic phenomena in complex-oxide thin films and ceramics. After earning my PhD in 2015, I joined the Nanostructure Physics group at KTH as a postdoctoral researcher. There I broadened my expertise to transition-metal thin-film nanostructures with thermally controlled magnetic interlayer interactions. Employing nanostructuring and interface engineering, I designed synthetic ferro-, ferri- and antiferro-magnets with outstanding spin-transport, magneto-dynamic and magneto-caloric properties. Currently I lead research projects on magneto-caloric properties in transition-metal multilayers and on ultra-fast magneto-optical properties of planar arrays of synthetic-antiferromagnet nanodots and nanowires.

Previous & Ongoing Research Projects

	RKKY-driven Giant Magnetocaloric Effect Appl. Phys. Lett. 2020 Phys. Rev. Mater. 2018	Giant magnetocaloric effect (GMCE) is key for solid-state magnetic refrigeration and is observed in rare-earth alloys under large magnetic fields. Here we demonstrate GMCE in transition-metal multilayers under much smaller magnetic fields.
	Spin-Pumping in Synthetic Antiferromagnets Phys. Rev. Lett. 123, 2019 Phys. Rev. Lett. 122, 2019 Phys. Rev. B 2018 Phys. Rev. B 2016	FMR-driven spin pumping can provide information about pure spin currents, which is hardly achievable by any other means. We apply this method for investigating how spin currents interact with natural as well as synthetic ferro-, ferri- and antiferro-magnets.
	Thermally-Controlled RKKY Exchange in Magnetic Multilayers Nanosc. Res. Lett. 2018 Europhys. Lett. 2017 Phys. Rev. B 2017	Ruderman-Kittel-Kasuya-Yosida (RKKY) magnetic exchange is factually temperature-independent owing to the electron-transport origin. Here we demonstrate temperature-induced changes in RKKY coupled multilayers that occur in a temperature interval as narrow as 20 K.
	Temperature Regulated Magneto-Transport J. Appl. Phys. 2019 Appl. Phys. Lett. 2017	Thermally-induced magneto-transport phenomena are basic for thermally-assisted spintronic applications. Here we explore new ideas about controlling and sensing magneto-transport in thermally-regulated magnetic nanostructures.