Dependence of Domain-Wall Depinning Threshold Current on Pinning Profile
نویسندگان
چکیده
منابع مشابه
Dependence of domain-wall depinning threshold current on pinning profile.
We have investigated the threshold current density required for depinning a domain wall from constrictions in NiFe nanowires, which give rise to pinning potentials of fixed amplitude but variable profile. We observed it to vary linearly with the angle of the triangular constriction. These results are reproduced using micromagnetic simulations including the adiabatic and nonadiabatic spin-torque...
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Graduate School of Science, Tokyo Metropolitan University 1-1 Minamiosawa, Hachioji, Tokyo 192-0397 PRESTO, JST, 4-1-8 Honcho Kawaguchi, Saitama 332-0012 3 Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531 4 Frontier Research System (FRS), The Institute of Physical and Chemical Research (RIKEN), 2-1 Hirosawa, Wako, Saitama 351-0198 5 Department of Computer Scien...
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It is shown that a local bend of a nanowire is a source of pinning potential for a transversal head-to-head (tail-to-tail) domain wall. Eigenfrequency of the domain wall free oscillations at the pinning potential and the effective friction are determined as functions of the curvature and domain wall width. The pinning potential originates from the effective curvature-induced Dzyaloshinsky-like ...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2009
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.102.127203