Changing exchange bias in spin valves with an electric current |
| |
Authors: | Wei Z Sharma A Nunez A S Haney P M Duine R A Bass J MacDonald A H Tsoi M |
| |
Institution: | Physics 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. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|