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Proceedings Paper

Pure spin-current-induced magnetization switching
Author(s): T. Yang; T. Kimura; J.-B. Laloë; Y. Otani
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Paper Abstract

A spin current carries spin angular momentum in a spintronics device. Its interaction with a magnetic nanostructure not only gives rise to spin-dependent transport but also excites dynamics in the magnetic state. Unlike the spin-polarized electrical current, a pure spin current is useful for both fundamental and applied research because neither Oersted fields nor electrical current-related spurious effects are produced. Nonlocal electrical spin injection is a feasible way to produce the pure spin current. Here we demonstrate that the nonlocal spin valve signal is increased by an order of magnitude by improving the interface quality in a new device structure using a clean, in situ fabrication process. The generated pure spin current enables the magnetization reversal of a nanomagnet as efficiently as electrical current-induced magnetization switching. These results will open the door towards the realization of a pure-spin-current-driven device.

Paper Details

Date Published: 4 September 2008
PDF: 10 pages
Proc. SPIE 7036, Spintronics, 70361B (4 September 2008); doi: 10.1117/12.793903
Show Author Affiliations
T. Yang, The Institute of Physical and Chemical Research, RIKEN (Japan)
T. Kimura, The Institute of Physical and Chemical Research, RIKEN (Japan)
Univ. of Tokyo (Japan)
J.-B. Laloë, The Institute of Physical and Chemical Research, RIKEN (Japan)
Y. Otani, The Institute of Physical and Chemical Research, RIKEN (Japan)
Univ. of Tokyo (Japan)


Published in SPIE Proceedings Vol. 7036:
Spintronics
Manijeh Razeghi; Henri-Jean M. Drouhin; Jean-Eric Wegrowe, Editor(s)

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