A Caltech Library Service

Ballistic spin transport in a two-dimensional electron gas

Tang, H. X. and Monzon, F. G. and Lifshitz, Ron and Cross, M. C. and Roukes, M. L. (2000) Ballistic spin transport in a two-dimensional electron gas. Physical Review B, 61 (7). pp. 4437-4440. ISSN 0163-1829. doi:10.1103/PhysRevB.61.4437.

PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


We explore electrically injected, spin-polarized transport in a ballistic two-dimensional electron gas. We augment the Büttiker-Landauer picture with a 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 “spin transistor” devices.

Item Type:Article
Related URLs:
URLURL TypeDescription
Lifshitz, Ron0000-0002-8829-5506
Roukes, M. L.0000-0002-2916-6026
Additional Information:© 2000 The American Physical Society Received 28 July 1999 We gratefully acknowledge support from DARPA Spintronics, through ONR Grant No. N00014-96-1-0865. We also thank A. Polichtchouk and M. Hartl for contributions to this work.
Funding AgencyGrant Number
Defense Advanced Research Projects Agency (DARPA)DABT-63-98-1-0012
Issue or Number:7
Record Number:CaltechAUTHORS:TANprb00
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3307
Deposited By: Archive Administrator
Deposited On:26 May 2006
Last Modified:08 Nov 2021 19:55

Repository Staff Only: item control page