Dzyaloshinskii-Moriya domain wall resonance in ferromagnetic nanowires with a spin-transfer torque

We theoretically investigate the current-induced domain wall resonance in ferromagnetic nanowires with a Dzyaloshinskii-Moriya interaction. The adiabatic and nonadiabatic torques distort the wall's internal structure and exert a global pressure on the wall. An effective Newton's equation i...

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Bibliographic Details
Published inJournal of applied physics Vol. 117; no. 17
Main Authors Li, Zai-Dong, Liu, Fei, Li, Qiu-Yan, He, P. B.
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 07.05.2015
Subjects
AMPLITUDES
Applied physics
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
CRITICAL CURRENT
Critical current density
CURRENT DENSITY
DOMAIN STRUCTURE
Domain walls
FERROMAGNETIC MATERIALS
Ferromagnetic resonance
FERROMAGNETISM
FRICTION
NANOSCIENCE AND NANOTECHNOLOGY
NANOWIRES
POTENTIALS
RESONANCE
SPIN
TORQUE
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Summary:We theoretically investigate the current-induced domain wall resonance in ferromagnetic nanowires with a Dzyaloshinskii-Moriya interaction. The adiabatic and nonadiabatic torques distort the wall's internal structure and exert a global pressure on the wall. An effective Newton's equation is obtained analytically for a domain wall moving in one-dimensional potential and subject to a viscous friction and a driving force. Our results demonstrate that the Dzyaloshinskii-Moriya interaction affects the critical current density for depinning the wall, resonance frequency, and amplitude.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 14
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4919676