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Title: Cascaded spin motive force driven by the dynamics of the skyrmion lattice

We numerically investigate the spin motive force (SMF) driven by the dynamics of a Skyrmion lattice. The rotating mode of the Skyrmion core excited by the AC magnetic field induces the large spin-dependent electric field near the core. Due to the collective dynamics of Skyrmion lattice, the measurable voltage is enhanced by the cascade effect of the SMF. The amplitude of the AC voltage is estimated to 30 μV in a macroscopic sample, where 100 Skyrmions exist between two probes. We also investigate the SMF due to the dynamics of the helical magnetic state, where the enhancement of the SMF does not occur.
Authors:
;  [1]
  1. Department of Physics, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510 (Japan)
Publication Date:
OSTI Identifier:
22253857
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 24; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AMPLITUDES; ELECTRIC FIELDS; ELECTRIC POTENTIAL; MAGNETIC FIELDS; SKYRME POTENTIAL; SOLITONS; SPIN