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Direct imaging of current induced magnetic vortex gyration in an asymmetric potential well

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Abstract
Employing time-resolved x-ray microscopy, we investigate the dynamics of a pinned magnetic vortex domain wall in a magnetic nanowire. The gyrotropic motion of the vortex core is imaged in response to an exciting ac current. The elliptical vortex core trajectory at resonance reveals asymmetries in the local potential well that are correlated with the pinning geometry. Using the analytical model of a two-dimensional harmonic oscillator, we determine the resonance frequency of the vortex core gyration and, from the eccentricity of the vortex core trajectory at resonance, we can deduce the stiffness of the local potential well.
Keywords
DOMAIN-WALL MOTION, elastic constants, DYNAMICS, magnetic domain walls, magnetic structure, nanomagnetics, nanowires, Permalloy, time resolved spectroscopy, X-ray microscopy

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Chicago
Bisig, Andre, Jan Rhensius, Matthias Kammerer, Michael Curcic, Hermann Stoll, Gisela Schutz, Bartel Van Waeyenberge, et al. 2010. “Direct Imaging of Current Induced Magnetic Vortex Gyration in an Asymmetric Potential Well.” Applied Physics Letters 96 (15).
APA
Bisig, Andre, Rhensius, J., Kammerer, M., Curcic, M., Stoll, H., Schutz, G., Van Waeyenberge, B., et al. (2010). Direct imaging of current induced magnetic vortex gyration in an asymmetric potential well. APPLIED PHYSICS LETTERS, 96(15).
Vancouver
1.
Bisig A, Rhensius J, Kammerer M, Curcic M, Stoll H, Schutz G, et al. Direct imaging of current induced magnetic vortex gyration in an asymmetric potential well. APPLIED PHYSICS LETTERS. 2010;96(15).
MLA
Bisig, Andre, Jan Rhensius, Matthias Kammerer, et al. “Direct Imaging of Current Induced Magnetic Vortex Gyration in an Asymmetric Potential Well.” APPLIED PHYSICS LETTERS 96.15 (2010): n. pag. Print.
@article{1245295,
  abstract     = {Employing time-resolved x-ray microscopy, we investigate the dynamics of a pinned magnetic vortex domain wall in a magnetic nanowire. The gyrotropic motion of the vortex core is imaged in response to an exciting ac current. The elliptical vortex core trajectory at resonance reveals asymmetries in the local potential well that are correlated with the pinning geometry. Using the analytical model of a two-dimensional harmonic oscillator, we determine the resonance frequency of the vortex core gyration and, from the eccentricity of the vortex core trajectory at resonance, we can deduce the stiffness of the local potential well.},
  articleno    = {152506},
  author       = {Bisig, Andre and Rhensius, Jan and Kammerer, Matthias and Curcic, Michael and Stoll, Hermann and Schutz, Gisela and Van Waeyenberge, Bartel and Chou, Kang Wei and Tyliszczak, Tolek and Heyderman, Laura J and Krzyk, Stephen and von Bieren, Arndt and Klaui, Mathias},
  issn         = {0003-6951},
  journal      = {APPLIED PHYSICS LETTERS},
  keyword      = {DOMAIN-WALL MOTION,elastic constants,DYNAMICS,magnetic domain walls,magnetic structure,nanomagnetics,nanowires,Permalloy,time resolved spectroscopy,X-ray microscopy},
  language     = {eng},
  number       = {15},
  pages        = {3},
  title        = {Direct imaging of current induced magnetic vortex gyration in an asymmetric potential well},
  url          = {http://dx.doi.org/10.1063/1.3373590},
  volume       = {96},
  year         = {2010},
}

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