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Title: Dissipative soliton dynamics in a discrete magnetic nano-dot chain

Soliton dynamics is studied in a discrete magnetic nano-dot chain by means of micromagnetic simulations together with an analytic model equation. A soliton under a dissipative system is driven by an applied field. The field-driven dissipative soliton enhances its mobility nonlinearly, as the characteristic frequency and the intrinsic Gilbert damping decrease. During the propagation, the soliton emits spin waves which act as an extrinsic damping channel. The characteristic frequency, the maximum velocity, and the localization length of the soliton are found to be proportional to the threshold field, the threshold velocity, and the initial mobility, respectively.
Authors:
 [1] ;  [2] ;  [3] ; ;  [1] ;  [2] ;  [4]
  1. Department of Physics and Center for Nanospinics of Spintronic Materials, Korea Advanced Institute of Science and Technology, Daejeon 305-701 (Korea, Republic of)
  2. (Korea, Republic of)
  3. Department of Physics, Inha University, Incheon 402-751 (Korea, Republic of)
  4. Department of Materials Science and Engineering, KI for the Nanocentury, KAIST, Daejeon 305-701 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22283213
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; CARRIER MOBILITY; COMPUTERIZED SIMULATION; DAMPING; EMISSION; MAGNETISM; NONLINEAR PROBLEMS; QUANTUM DOTS; SOLITONS; SPIN WAVES; VELOCITY