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Proceedings Paper

Thermoelectrical manipulation of nano-magnets: a spin-thermionic oscillator
Author(s): A. M. Kadigrobov; S. Andersson; D. Radić; R. I. Shekhter; M. Jonson; V. Korenivski
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Paper Abstract

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.

Paper Details

Date Published: 24 August 2010
PDF: 17 pages
Proc. SPIE 7760, Spintronics III, 77600R (24 August 2010); doi: 10.1117/12.853874
Show Author Affiliations
A. M. Kadigrobov, Univ. of Gothenburg (Sweden)
Ruhr-Univ. Bochum (Germany)
S. Andersson, Royal Institute of Technology (Sweden)
D. Radić, Univ. of Gothenburg (Sweden)
Univ. of Zagreb (Croatia)
R. I. Shekhter, Univ. of Gothenburg (Sweden)
M. Jonson, Univ. of Gothenburg (Sweden)
Heriot-Watt Univ. (United Kingdom)
Konkuk Univ. (Korea, Republic of)
V. Korenivski, Royal Institute of Technology (Sweden)

Published in SPIE Proceedings Vol. 7760:
Spintronics III
Henri-Jean M. Drouhin; Jean-Eric Wegrowe; Manijeh Razeghi, Editor(s)

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