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Published on: May 13, 2020
Changing exchange bias in spin valves with an electric current
1Physics Department, University of Texas at Austin, Austin, Texas 78712, USA.
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.
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