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Titolo:
Ballistic spin transport in a two-dimensional electron gas
Autore:
Tang, HX; Monzon, FG; Lifshitz, R; Cross, MC; Roukes, ML;
Indirizzi:
CALTECH, Pasadena, CA 91125 USA CALTECH Pasadena CA USA 91125CALTECH, Pasadena, CA 91125 USA
Titolo Testata:
PHYSICAL REVIEW B
fascicolo: 7, volume: 61, anno: 2000,
pagine: 4437 - 4440
SICI:
1098-0121(20000215)61:7<4437:BSTIAT>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
ORBIT INTERACTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
13
Recensione:
Indirizzi per estratti:
Indirizzo: Roukes, ML CALTECH, Pasadena, CA 91125 USA CALTECH Pasadena CA USA 91125CALTECH, Pasadena, CA 91125 USA
Citazione:
H.X. Tang et al., "Ballistic spin transport in a two-dimensional electron gas", PHYS REV B, 61(7), 2000, pp. 4437-4440

Abstract

We explore electrically injected, spin-polarized transport in a ballistic two-dimensional electron gas. We augment the Buttiker-Landauer picture witha simple, but realistic model for spin-selective contacts to describe multimode reservoir-to-reservoir transport of ballistic spin-1/2 particles. Clear and unambiguous signatures of spin transport are established in this regime, for the simplest measurement configuration that demonstrates them directly. These effects originate from spin precession of ballistic carriers; they exhibit a strong dependence upon device geometry, and vanish in the diffusive limit. Our results have important implications for prospective "spintransistor" devices.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/07/20 alle ore 22:30:11