TY - JOUR
T1 - Nonthermal magnetization reversal assisted by unpolarized current
AU - Riss, O.
AU - Gerber, A.
AU - Korenblit, I. Ya
AU - Karpovsky, M.
AU - Hacohen-Gourgy, S.
AU - Tsukernik, A.
AU - Tuaillon-Combes, J.
AU - Mélinon, P.
AU - Perez, A.
PY - 2010/10/8
Y1 - 2010/10/8
N2 - We report a systematic study of effects of temperature and current density on magnetization reversal of thin Ni films and arrays of nanoscopic Co clusters embedded in Pt matrix, in search of mechanisms stimulating magnetization reversal which are not related to spin polarization or to Joule heating by passing current. Reduction in coercive field with current density in Co/Pt can be consistently explained by Joule heating. On contrary, in Ni films we have identified a number of features inconsistent with the "thermal-only" scenario that can be considered as evidence of destabilization of magnetization by unpolarized electric current.
AB - We report a systematic study of effects of temperature and current density on magnetization reversal of thin Ni films and arrays of nanoscopic Co clusters embedded in Pt matrix, in search of mechanisms stimulating magnetization reversal which are not related to spin polarization or to Joule heating by passing current. Reduction in coercive field with current density in Co/Pt can be consistently explained by Joule heating. On contrary, in Ni films we have identified a number of features inconsistent with the "thermal-only" scenario that can be considered as evidence of destabilization of magnetization by unpolarized electric current.
UR - http://www.scopus.com/inward/record.url?scp=78049475670&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.82.144417
DO - 10.1103/PhysRevB.82.144417
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AN - SCOPUS:78049475670
SN - 1098-0121
VL - 82
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 14
M1 - 144417
ER -