Changing exchange bias in spin valves with an electric current

Z. Wei; A. Sharma; A. S. Nunez; P. M. Haney; R. A. Duine; J. Bass; A. H. MacDonald; M. Tsoi

doi:10.1103/PhysRevLett.98.116603

Changing exchange bias in spin valves with an electric current

Z. Wei, A. Sharma, A. S. Nunez, P. M. Haney, R. A. Duine, J. Bass, A. H. MacDonald, M. Tsoi

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

Abstract

We show that a high-density electric current, injected from a point contact into an exchange-biased spin valve, systematically changes the exchange bias. The bias can either increase or decrease depending upon the current direction. This observation is not readily explained by the well-known spin-transfer torque effect in ferromagnetic metal circuits, but could be evidence for the recently predicted current-induced torques in antiferromagnetic metals. © 2007 The American Physical Society.

Original language	English
Journal	Physical Review Letters
Volume	98
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevLett.98.116603
Publication status	Published - 16 Mar 2007

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10.1103/PhysRevLett.98.116603

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title = "Changing exchange bias in spin valves with an electric current",

abstract = "We show that a high-density electric current, injected from a point contact into an exchange-biased spin valve, systematically changes the exchange bias. The bias can either increase or decrease depending upon the current direction. This observation is not readily explained by the well-known spin-transfer torque effect in ferromagnetic metal circuits, but could be evidence for the recently predicted current-induced torques in antiferromagnetic metals. {\textcopyright} 2007 The American Physical Society.",

author = "Z. Wei and A. Sharma and Nunez, {A. S.} and Haney, {P. M.} and Duine, {R. A.} and J. Bass and MacDonald, {A. H.} and M. Tsoi",

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AU - Sharma, A.

AU - Nunez, A. S.

AU - Haney, P. M.

AU - Duine, R. A.

AU - Bass, J.

AU - MacDonald, A. H.

AU - Tsoi, M.

PY - 2007/3/16

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AB - We show that a high-density electric current, injected from a point contact into an exchange-biased spin valve, systematically changes the exchange bias. The bias can either increase or decrease depending upon the current direction. This observation is not readily explained by the well-known spin-transfer torque effect in ferromagnetic metal circuits, but could be evidence for the recently predicted current-induced torques in antiferromagnetic metals. © 2007 The American Physical Society.

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VL - 98

JO - Physical Review Letters

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Changing exchange bias in spin valves with an electric current

Abstract

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