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All optical measurement of Rashba coefficient in quantum wells

All optical measurement of Rashba coefficient in quantum wells
All optical measurement of Rashba coefficient in quantum wells
We perform an all-optical spin-dynamic measurement of the Rashba spin-orbit interaction in (110)-oriented GaAs/AlGaAs quantum wells under applied electric field. This crystallographic orientation allows us to isolate the Rashba from other contributions, giving precise values of the Rashba coefficient. At low temperature, we find good agreement between our measurements and the k·p theory. Unexpectedly, we observe a temperature dependence of the Rashba coefficient that may signify the importance of higher-order terms of the Rashba coupling.
aluminium compounds, gallium arsenide, III-V semiconductors, semiconductor quantum wells, spin dynamics, spin-orbit interactions
1550-235X
125344-[5pp]
Eldridge, P.S.
775aabc8-06a8-4581-8a92-05c07efbdfd0
Leyland, W.J.H.
e6a7d9aa-be90-41ef-90db-bc411363b84b
Lagoudakis, P.G.
ea50c228-f006-4edf-8459-60015d961bbf
Karimov, O.Z.
e5137e05-4b16-484e-aae8-952a6fd69da4
Henini, M.
dffaac17-caab-4a18-9eb6-c858d8bb1ed2
Taylor, D.
238e3500-b412-4f97-a9c2-d6195a01a0df
Phillips, R.T.
4906e984-4607-4491-afce-007bce07a94a
Harley, R.T.
54613031-f60f-45f4-9b20-e49bcfd53b77
Eldridge, P.S.
775aabc8-06a8-4581-8a92-05c07efbdfd0
Leyland, W.J.H.
e6a7d9aa-be90-41ef-90db-bc411363b84b
Lagoudakis, P.G.
ea50c228-f006-4edf-8459-60015d961bbf
Karimov, O.Z.
e5137e05-4b16-484e-aae8-952a6fd69da4
Henini, M.
dffaac17-caab-4a18-9eb6-c858d8bb1ed2
Taylor, D.
238e3500-b412-4f97-a9c2-d6195a01a0df
Phillips, R.T.
4906e984-4607-4491-afce-007bce07a94a
Harley, R.T.
54613031-f60f-45f4-9b20-e49bcfd53b77

Eldridge, P.S., Leyland, W.J.H., Lagoudakis, P.G., Karimov, O.Z., Henini, M., Taylor, D., Phillips, R.T. and Harley, R.T. (2008) All optical measurement of Rashba coefficient in quantum wells. Physical Review B, 77 (12), 125344-[5pp]. (doi:10.1103/PhysRevB.77.125344).

Record type: Article

Abstract

We perform an all-optical spin-dynamic measurement of the Rashba spin-orbit interaction in (110)-oriented GaAs/AlGaAs quantum wells under applied electric field. This crystallographic orientation allows us to isolate the Rashba from other contributions, giving precise values of the Rashba coefficient. At low temperature, we find good agreement between our measurements and the k·p theory. Unexpectedly, we observe a temperature dependence of the Rashba coefficient that may signify the importance of higher-order terms of the Rashba coupling.

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More information

Published date: 31 March 2008
Keywords: aluminium compounds, gallium arsenide, III-V semiconductors, semiconductor quantum wells, spin dynamics, spin-orbit interactions
Organisations: Quantum, Light & Matter Group

Identifiers

Local EPrints ID: 153363
URI: http://eprints.soton.ac.uk/id/eprint/153363
ISSN: 1550-235X
PURE UUID: 0ef84f83-76f9-408e-a063-c7b1db6a52f9

Catalogue record

Date deposited: 21 May 2010 14:27
Last modified: 16 Jul 2019 23:59

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