Nonthermal magnetization reversal assisted by unpolarized current

O. Riss; A. Gerber; I. Ya Korenblit; M. Karpovsky; S. Hacohen-Gourgy; A. Tsukernik; J. Tuaillon-Combes; P. Mélinon; A. Perez

doi:10.1103/PhysRevB.82.144417

Nonthermal magnetization reversal assisted by unpolarized current

O. Riss^*, A. Gerber, I. Ya Korenblit, M. Karpovsky, S. Hacohen-Gourgy, A. Tsukernik, J. Tuaillon-Combes, P. Mélinon, A. Perez

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Article number	144417
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	82
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.82.144417
State	Published - 8 Oct 2010

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10.1103/PhysRevB.82.144417

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abstract = "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.",

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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.

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DO - 10.1103/PhysRevB.82.144417

M3 - מאמר

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VL - 82

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 14

M1 - 144417

ER -

Nonthermal magnetization reversal assisted by unpolarized current

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