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Andrii V. Chumak
Researcher at University of Vienna
Publications - 167
Citations - 10962
Andrii V. Chumak is an academic researcher from University of Vienna. The author has contributed to research in topics: Spin wave & Yttrium iron garnet. The author has an hindex of 51, co-authored 161 publications receiving 8411 citations. Previous affiliations of Andrii V. Chumak include Taras Shevchenko National University of Kyiv & Kaiserslautern University of Technology.
Papers
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Double-wave-front reversal of dipole-exchange spin waves in yttrium-iron garnet films
TL;DR: In this paper, the effect of double-wavefront reversal in the system of dipolar and dipole exchange spin waves propagating in a ferrite film is studied experimentally and theoretically with the goal of development of a nonlinear microwave signal processor.
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Non-resonant wave front reversal of spin waves used for microwave signal processing
Vitaliy I. Vasyuchka,Vitaliy I. Vasyuchka,Gennadii A. Melkov,Andrei Slavin,Andrii V. Chumak,V. A. Moiseienko,Burkard Hillebrands +6 more
TL;DR: In this paper, it was demonstrated that non-resonant wave front reversal (WFR) of spin-wave pulses caused by pulsed parametric pumping can be effectively used for microwave signal processing.
Posted Content
Auto-oscillations in YIG/Pt microstructures driven by the spin Seebeck effect
Viktor Lauer,Michael Schneider,Thomas J. Meyer,Carsten Dubs,Philipp Pirro,Thomas Brächer,Frank Heussner,Bert Lägel,Vitaliy I. Vasyuchka,Alexander A. Serga,Burkard Hillebrands,Andrii V. Chumak +11 more
TL;DR: In this article, the authors demonstrate that a thermal gradient in a nanostructured YIG(66 nm)/Pt(7 nm) bilayer can trigger coherent spin dynamics in the YIG layer due to a spin Seebeck effect induced spin transfer torque (STT).
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Spin-Wave Dispersion Measurement by Variable-Gap Propagating Spin-Wave Spectroscopy
Marek Vaňatka,Krzysztof Szulc,Ondřej Wojewoda,Carsten Dubs,Andrii V. Chumak,Maciej Krawczyk,Oleksandr V. Dobrovolskiy,Jarosław W. Kłos,Michal Urbánek +8 more
TL;DR: In this article, a variable-gap propagating spin-wave spectroscopy (VG-PSWS) method is proposed to derive the dispersion relation of spin waves in wide frequency and wavenumber range.
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Splitting of standing spin-wave modes in circular submicron ferromagnetic dot under axial symmetry violation.
S. A. Bunyaev,Vladimir Golub,O. Yu. Salyuk,Elena V. Tartakovskaya,Nuno N.M. Santos,A. A. Timopheev,Nikolai A. Sobolev,Nikolai A. Sobolev,Alexander A. Serga,Andrii V. Chumak,Burkard Hillebrands,Gleb N. Kakazei +11 more
TL;DR: In the present work the evolution of spin wave spectra of an array of non-interacting Permalloy submicron circular dots for the case of magnetic field deviation from the normal to the array plane have been studied by ferromagnetic resonance technique and it is shown that symmetry violation leads to a splitting of spin-wave modes.