Magnon Pumping by a Time-Dependent Transverse Magnetic Field in Ferromagnetic Insulators

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概要

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• The magnon pumping effect in ferromagnetic insulators under an external time-dependent transverse magnetic field is theoretically studied. Generation of a magnon current is discussed by calculating the magnon source term in the spin continuity equation. This term represents the non-conservation of magnons arising from an applied transverse magnetic field. The magnon source term has a resonance structure as a function of the angular frequency of the transverse field, and this fact is useful to enhance the pumping effect.

• 2011-05-15

著者

• Tatara Gen

  Department Of Earth And Space Science Osaka University

• Nakata Kouki

  Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan

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