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Dynamic nuclear overhauser shifts in Larmor beats from a quantum well

Dynamic nuclear overhauser shifts in Larmor beats from a quantum well
Dynamic nuclear overhauser shifts in Larmor beats from a quantum well
The significance of nuclear spin polarisation in time-resolved optical studies of III–V semiconductors is addressed. Electron Larmor beats in pump-probe reflectivity from a GaAs/AlGaAs quantum well show Overhauser shift of 0.7 T due to accumulated nuclear polarisation I/I=0.065. This leads to precision values of electron g-factor, elucidates nuclear spin pumping and diffusion mechanisms in quantum wells and informs discussion of implications for spin-electronics and transport.
a. quantum wells, a. semiconductors, d. spin dynamics
419-422
Malinowski, A.
54fd31d4-b510-4726-a8cd-33b6b2ad0427
Harley, R.T.
54613031-f60f-45f4-9b20-e49bcfd53b77
Malinowski, A.
54fd31d4-b510-4726-a8cd-33b6b2ad0427
Harley, R.T.
54613031-f60f-45f4-9b20-e49bcfd53b77

Malinowski, A. and Harley, R.T. (2000) Dynamic nuclear overhauser shifts in Larmor beats from a quantum well. Solid State Communications, 114 (8), 419-422. (doi:10.1016/S0038-1098(00)00074-0).

Record type: Article

Abstract

The significance of nuclear spin polarisation in time-resolved optical studies of III–V semiconductors is addressed. Electron Larmor beats in pump-probe reflectivity from a GaAs/AlGaAs quantum well show Overhauser shift of 0.7 T due to accumulated nuclear polarisation I/I=0.065. This leads to precision values of electron g-factor, elucidates nuclear spin pumping and diffusion mechanisms in quantum wells and informs discussion of implications for spin-electronics and transport.

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Published date: 27 April 2000
Keywords: a. quantum wells, a. semiconductors, d. spin dynamics

Identifiers

Local EPrints ID: 50899
URI: http://eprints.soton.ac.uk/id/eprint/50899
DOI: doi:10.1016/S0038-1098(00)00074-0
PURE UUID: ce287801-ee4b-4cff-bb2b-d2defa342dbd

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Date deposited: 09 Apr 2008
Last modified: 15 Mar 2024 10:13

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Contributors

Author: A. Malinowski
Author: R.T. Harley

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