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Effect of aspect ratio of nanostrip on transformation of transverse domain wall due to adiabatic spin torque
Author(s) -
Seo S. M.,
Kim W. J.,
Lee T. D.,
Lee K. J.
Publication year - 2007
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200777170
Subject(s) - transverse plane , aspect ratio (aeronautics) , domain wall (magnetism) , adiabatic process , physics , torque , condensed matter physics , limit (mathematics) , domain (mathematical analysis) , current (fluid) , mechanics , spin (aerodynamics) , materials science , thermodynamics , mathematics , quantum mechanics , magnetic field , mathematical analysis , structural engineering , optoelectronics , engineering , magnetization
Abstract We have studied the current‐induced dynamics of the transverse domain wall in the adiabatic limit. Above the threshold current density for the continuous domain wall motion, the transverse wall is transformed by the injection of the antivortex. In general, the wall velocity increases and the wall width decreases as the antivortex is injected. However, detailed time‐dependent profiles of the wall velocity and the wall width are significantly affected by the aspect ratio of the nanostrip. The mean velocity of the TW decreases as the aspect ratio increases. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)