24 August 2010 Thermoelectrical manipulation of nano-magnets: a spin-thermionic oscillator
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We investigate the interplay between the thermodynamic properties and spin-dependent transport in a mesoscopic magnetic multilayer, in which two strongly ferromagnetic layers are exchange-coupled through a weakly ferromagnetic spacer. We show theoretically that the system allows a spin-thermoelectronic control of the relative orientation of the outer layers. Supporting experimental evidence of thermally controlled switching from parallel to anti-parallel magnetization orientations in the sandwich is presented. We show magneto-resistance oscillations may take place with frequencies up to GHz. We discuss in detail an experimental realization of a device that can operate as a thermo-magneto-resistive switch or oscillator.
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A. M. Kadigrobov, S. Andersson, D. Radić, R. I. Shekhter, M. Jonson, V. Korenivski, "Thermoelectrical manipulation of nano-magnets: a spin-thermionic oscillator", Proc. SPIE 7760, Spintronics III, 77600R (24 August 2010); doi: 10.1117/12.853874; https://doi.org/10.1117/12.853874

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