Time-resolved imaging of current-induced domain-wall oscillations

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Current-induced domain-wall dynamics is investigated via high-resolution soft x-ray transmission microscopy by a stroboscopic pump-and-probe measurement scheme at a temporal resolution of 200 ps. A 180{sup o} domain wall in a restoring potential of a permalloy microstructure is displaced from its equilibrium position by nanosecond current pulses leading to oscillations with velocities up to 325 m/s. The motion of the wall is described with an analytical model of a rigid domain wall in a nonharmonic potential allowing one to determine the mass of the domain wall. We show that Oersted fields dominate the domain-wall dynamics in our geometry.

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Bocklage, Lars; Krueger, Benjamin; Eiselt, Rene; Bolte, Markus; Fischer, Peter & Meier, Guido October 7, 2008.

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Current-induced domain-wall dynamics is investigated via high-resolution soft x-ray transmission microscopy by a stroboscopic pump-and-probe measurement scheme at a temporal resolution of 200 ps. A 180{sup o} domain wall in a restoring potential of a permalloy microstructure is displaced from its equilibrium position by nanosecond current pulses leading to oscillations with velocities up to 325 m/s. The motion of the wall is described with an analytical model of a rigid domain wall in a nonharmonic potential allowing one to determine the mass of the domain wall. We show that Oersted fields dominate the domain-wall dynamics in our geometry.

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  • Journal Name: Phys Rev B Rapid Comm

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  • Report No.: LBNL-1166E
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 942139
  • Archival Resource Key: ark:/67531/metadc894145

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  • October 7, 2008

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  • Sept. 27, 2016, 1:39 a.m.

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  • Sept. 30, 2016, 7:17 p.m.

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Bocklage, Lars; Krueger, Benjamin; Eiselt, Rene; Bolte, Markus; Fischer, Peter & Meier, Guido. Time-resolved imaging of current-induced domain-wall oscillations, article, October 7, 2008; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc894145/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.