Magnon excitations in vortex-state nanorings

Автор(и)

  • C.E. Zaspel Department of Environmental Sciences, University of Montana-Western, Dillon, MT 59725, USA
  • J.W. Owens Department of Environmental Sciences, University of Montana-Western, Dillon, MT 59725, USA
  • B.A. Ivanov Institute of Magnetism, National Academy of Sciences of Ukraine, Kiev 03412, Ukraine

DOI:

https://doi.org/10.1063/1.2400688

Ключові слова:

Landau-Lifshitz equation, magnetostatic interaction, exchange energy, exchange length, vortex state, nanoring, radial number, azimuthal number.

Анотація

The magnon mode excitation spectrum is calculated using the linearized Landau–Lifshitz equations applied to the ring in the vortex ground state. A combination of analytical techniques with numerical evaluation of integrals is used to obtain the mode frequency with the effective magnetostatic volume charge as a small perturbation. In general, the modes can be classified according to radial number n and azimuthal number m. It is shown that the frequency increases as n increases, and the frequency decreases as m increases.

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Опубліковано

2006-10-25

Як цитувати

(1)
Zaspel, C.; Owens, J.; Ivanov, B. Magnon Excitations in Vortex-State Nanorings. Fiz. Nizk. Temp. 2006, 32, 1493-1497.

Номер

Том 32 № 12 (2006)

Розділ

Низькотемпературний магнетизм

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