Spectral Dependence of Spin Photocurrent and Current-Induced Spin Polarization in an InGaAs/InAlAs Two-Dimensional Electron Gas

Abstract

References (16)

Citing Articles

Download: PDF (871 kB) or Buy this Article (US$25) (Use Article Pack)

C. L. Yang,¹ H. T. He,¹ Lu Ding,¹ L. J. Cui,^1,2 Y. P. Zeng,² J. N. Wang,¹ and W. K. Ge¹
¹Department of Physics and Institute of Nano-Science and Technology, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
²Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 921, Beijing 100083, China

Received 30 May 2005; published 11 May 2006

Theconverse effects of spin photocurrent and current induced spin polarizationare experimentally demonstrated in a two-dimensional electron gas system withRashba spin splitting. Their consistency with the strength of theRashba coupling as measured for the same system from beatingof the Shubnikov–de Haas oscillations reveals a unified picture for thespin photocurrent, current-induced spin-polarization, and spin-orbit coupling. In addition, theobserved spectral inversion of the spin photocurrent indicates a systemwith dominating structure inversion asymmetry.

URL:	http://link.aps.org/doi/10.1103/PhysRevLett.96.186605
DOI:	10.1103/PhysRevLett.96.186605
PACS:	72.25.Fe; 72.25.Pn 72.25.Fe Optical creation of spin polarized carriers 72.25.Pn Current-driven spin pumping YEAR: 2006
KEYWORDS:	electron spin polarisation, indium compounds, gallium arsenide, aluminium compounds, two-dimensional electron gas, III-V semiconductors, photoconductivity, spin-orbit interactions, Shubnikov-de Haas effect

REFERENCES (16)

View in Separate Window/Tab

For access to fully linked references, you need to log in. For access to fully linked references, you need to Log in.

S. Datta and B. Das, Appl. Phys. Lett. 56, 665 (1990).
Y. A. Bychkov and E. I. Rashba, J. Phys. C 17, 6039 (1984).
S. D. Ganichev, E. L. Ivchenko, S. N. Danilov, J. Eroms, W. Wegscheider, D. Weiss, and W. Prettl, Phys. Rev. Lett. 86, 4358 (2001).
A. G. Aronov, Y. B. Lyanda-Geller, and G. E. Pikus, Sov. Phys. JETP 73, 537 (1991).
J. I. Inoue, G. E. W. Bauer, and L. W. Molenkamp, Phys. Rev. B 67, 033104 (2003).
Y. K. Kato, R. C. Myers, A. C. Gossard, and D. D. Awschalom, Phys. Rev. Lett. 93, 176601 (2004).
A. Yu. Silov, P. A. Blajnov, J. H. Wolter, R. Hey, K. H. Ploog, and N. S. Averkiev, Appl. Phys. Lett. 85, 5929 (2004).
G. Engels, J. Lange, Th. Schapers, and H. Luth, Phys. Rev. B 55, R1958 (1997);