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[×ÊÔ´] nature Asia Mat ×îÐÂreview: Ìú´Å°ëµ¼ÌåÒìÖʽáÓÃÓÚFET»òLED

Spin-based electronics or ¡®spintronics¡¯ is a rapidly expanding research area that off ers the promise of surpassing the limits of conventional electrical charge-based semiconductor devices with potential advantages in speed and power consumption. For electron spin to be successfully employed in a spintronic device, the integration of electron charge and electron spin in a semiconductor is one ofthe central issues. In the basic concept of a spintronic device at present, the device functionality relies primarily on three diff erent key processes: spin injection, spin manipulation and spin detection in ferromagnet/semiconductor heterostructures. This article reviews the current status of research on spin injection in semiconductors by both electrical and optical means and discusses the electronspin transport processes across the interface based on optical spin orientation.

[ Last edited by taozhikai on 2011-7-27 at 08:28 ]
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