Topological spin dynamics in cubic FeGe near room temperature

Turgut, Emrah; Stolt, Matthew J.; Jin, Song; Fuchs, Gregory D.

doi:10.1063/1.4997013

Topological spin dynamics in cubic FeGe near room temperature

Journal Article · Tue Nov 14 00:00:00 EST 2017 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4997013· OSTI ID:1540119

Turgut, Emrah ^[1]; Stolt, Matthew J. ^[2]; Jin, Song ^[2]; ^[3]

Cornell Univ., Ithaca, NY (United States). School of Applied and Engineering Physics; DOE/OSTI
Univ. of Wisconsin, Madison, WI (United States). Dept. of Chemistry
Cornell Univ., Ithaca, NY (United States). School of Applied and Engineering Physics

Understanding spin-wave dynamics in chiral magnets is a key step for the development of high-speed, spin-wave based spintronic devices that take advantage of chiral and topological spin textures for their operation. Here, we present an experimental and theoretical study of spin-wave dynamics in a cubic B20 FeGe single crystal. Using the combination of waveguide microwave absorption spectroscopy (MAS), micromagnetic simulations, and analytical theory, we identify the resonance dynamics in all magnetic phases (field polarized, conical, helical, and skyrmion phases). Finally, because the resonance frequencies of specific chiral spin textures are unique, a quantitative agreement between our theoretical predictions and experimental findings for all resonance frequencies and spin wave modes enables us to unambiguously identify chiral magnetic phases and to demonstrate that MAS is a powerful tool to efficiently extract a magnetic phase diagram.

View Accepted Manuscript (DOE)

Research Organization:: Cornell Univ., Ithaca, NY (United States)

Sponsoring Organization:: National Science Foundation (NSF); USDOE Office of Science (SC)

Grant/Contract Number:: SC0012245

OSTI ID:: 1540119

Alternate ID(s):: OSTI ID: 1420591

Journal Information:: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 18 Vol. 122; ISSN 0021-8979

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Electrical Detection and Magnetic Imaging of Stabilized Magnetic Skyrmions in Fe ₁₋ _x Co _x Ge ( x < 0.1) Microplates Stolt, Matthew J.; Schneider, Sebastian; Mathur, Nitish Advanced Functional Materials, Vol. 29, Issue 12 https://doi.org/10.1002/adfm.201805418	journal	February 2019
Magnetic skyrmions in nanostructures of non-centrosymmetric materials Mathur, Nitish; Stolt, Matthew J.; Jin, Song APL Materials, Vol. 7, Issue 12 https://doi.org/10.1063/1.5130423	journal	December 2019
Engineering Dzyaloshinskii-Moriya interaction in B20 thin-film chiral magnets Turgut, Emrah; Paik, Hanjong; Nguyen, Kayla Physical Review Materials, Vol. 2, Issue 7 https://doi.org/10.1103/physrevmaterials.2.074404	journal	July 2018
Engineering Dzyaloshinskii-Moriya interaction in B20 thin film chiral magnets Turgut, Emrah; Paik, Hanjong; Nguyen, Kayla Unpublished https://doi.org/10.13140/rg.2.2.36021.37608	text	January 2018

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