科研之友
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摘要
We study the adiabatic quantum pumping and quantum size effects of spin torque in a magnetic tunnel junction within a scattering matrix approach. Quantum size effects are predicted in the presence of a dc bias as a function of the thickness of the normal-metal layer inserted between two magnetic layers and of the fixed magnetic layer. In the presence of ac voltages, the results for the spin torque show a peculiar magnification effect and advantages of spin-torque pumping in actual devices are also discussed.
- 出版日期2010-8-12
