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

Journal Article · Thu May 07 00:00:00 EDT 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4919676· OSTI ID:22402979

Li, Zai-Dong; Liu, Fei; Li, Qiu-Yan ^[1]; He, P. B. ^[2]

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1. Department of Applied Physics, Hebei University of Technology, Tianjin 300401 (China)
2. School of Physics and Electronics, Hunan University, Changsha 410082 (China)

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.

• OSTI ID: 22402979
• Journal Information: Journal of Applied Physics, Vol. 117, Issue 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
77 NANOSCIENCE AND NANOTECHNOLOGY
AMPLITUDES
CRITICAL CURRENT
CURRENT DENSITY
DOMAIN STRUCTURE
FERROMAGNETIC MATERIALS
FERROMAGNETISM
FRICTION
NANOWIRES
POTENTIALS
RESONANCE
SPIN
TORQUE