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Condensed Matter > Statistical Mechanics

arXiv:0812.4954 (cond-mat)
[Submitted on 29 Dec 2008]

Title:Vortex dynamics in confined stratified conditions

Authors:Farkhad G. Aliev, Juan F. Sierra, Ahmad A. Awad, Gleb N. Kakazei, Dong-Soo Han, Sang-Koog Kim, Vitali Metlushko, Bojan Ilic, Konstantin Y. Guslienko
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Abstract: We report on linear spin dynamics in the vortex state of the Permalloy dots subjected to stratified (magnetic) field. We demonstrate experimentally and by simulations the existence of two distinct dynamic regimes corresponding to the vortex stable and metastable states. Breaking cylindrical symmetry leads to unexpected eigenmodes frequency splitting in the stable state and appearance of new eigenmodes in the metastable state above the vortex nucleation field. Dynamic response in the metastable state strongly depends on relative orientation of the external rf pumping and the bias magnetic fields. These findings may be relevant for different vortex states in confined and stratified conditions.
Subjects: Statistical Mechanics (cond-mat.stat-mech)
Cite as: arXiv:0812.4954 [cond-mat.stat-mech]
  (or arXiv:0812.4954v1 [cond-mat.stat-mech] for this version)
  https://doi.org/10.48550/arXiv.0812.4954
Related DOI: https://doi.org/10.1103/PhysRevB.79.174433

Submission history

From: Ahmad Awad A [view email]
[v1] Mon, 29 Dec 2008 18:55:17 UTC (411 KB)
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