Localization of magnon modes in a curved magnetic nanowire

Localization of magnon modes in a curved magnetic nanowire

Gaididei, Y. ; Kravchuk, V.P. ; Martens, F. G. ; Pylypovskyi, O.V. ; Avadh Saxena ; Sheka, D.D. ; Volkov, O.M.

Тема: Современные проблемы нелинейной физики магнетизма. I. Динамические солитоны

Інший ID: PACS: 75.78.–n, 75.75.–c, 75.30.Et, 75.30.Ds

URI: http://dspace.nbuv.gov.ua/handle/123456789/176175

Посилання: Localization of magnon modes in a curved magnetic nanowire / Y. Gaididei, V.P. Kravchuk, F.G. Mertens, O.V. Pylypovskyi, Avadh Saxena, D.D. Sheka, O.M. Volkov // Физика низких температур. — 2018. — Т. 44, № 7. — С. 814-823. — Бібліогр.: 45 назв. — англ.

Підтримка: D.D.S. and O.V.P. thank the University of Bayreuth and Helmholtz–Zentrum Dresden–Rossendorf e. V. (HZDR), where part of this work was performed, for their kind hospitality and acknowledge the support from the Alexander von Humboldt Foundation (Research Group Linkage Programme). V.P.K. acknowledges the support from the Alexander von Humboldt Foundation. All simulations for this work were performed using the computer clusters of the Bayreuth University [40], Taras Shevchenko National University of Kyiv [41], Bogolyubov Institute for Theoretical Physics of the National Academy of Sciences of Ukraine [42] and HZDR [43]. A.S. was supported by the US Department of Energy. Authors thank D. Makarov (HZDR) for fruitful discussions.

Дата: 2018

Завантажень: 152

Localization of magnon modes in a curved magnetic nanowire

Анотація:

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. 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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