Localization of magnon modes in a curved magnetic nanowire

Gaididei, Yuri; Kravchuk, Volodymyr P.; Mertens, Franz G.; Pylypovskyi, Oleksandr V.; Saxena, Avadh; Sheka, Denis D.; Volkov, Oleksii M.

doi:10.1063/1.5041428

Title: Localization of magnon modes in a curved magnetic nanowire

Journal Article · 06 July 2018 · Low Temperature Physics

DOI: https://doi.org/10.1063/1.5041428 · OSTI ID:1481975

Gaididei, Yuri ^[1]; Kravchuk, Volodymyr P. ^[2]; Mertens, Franz G. ^[3]; Pylypovskyi, Oleksandr V. ^[4];

^[5]; Sheka, Denis D. ^[4]; Volkov, Oleksii M. ^[6]

Bogolyubov Institute for Theoretical Physics, Kyiv (Ukraine)
Bogolyubov Institute for Theoretical Physics, Kyiv (Ukraine); IFW Dresden, Dresden (Germany)
Univ. of Bayreuth, Bayreuth (Germany)
Taras Shevchenko National Univ. of Kyiv, Kyiv (Ukraine)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Helmholtz-Zentrum Dresden-Rossendorf e. V., Dresden (Germany)

Spin waves in magnetic nanowires can be bound by a local bending of the wire. The eigenfrequency of a truly local magnon mode is determined by the curvature: a general analytical expression is established for any infinitesimally weak localized curvature of the wire. In conclusion, the interaction of the local mode with spin waves, propagating through the bend, results in scattering features, which is well confirmed by spin-lattice simulations.

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Research Organization:: Los Alamos National Laboratory (LANL)

Sponsoring Organization:: LDRD; USDOE

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1481975

Report Number(s):: LA-UR-18-20270

Journal Information:: Low Temperature Physics, Journal Name: Low Temperature Physics Journal Issue: 7 Vol. 44; ISSN 1063-777X

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

Country of Publication:: United States

Language:: English

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