Journal article
Control of electron-spin coherence using Landau level quantization in a two-dimensional electron gas
Physical review. B, Condensed matter and materials physics, Vol.70(16), pp.161313.1-161313.4
10/01/2004
DOI: 10.1103/PhysRevB.70.161313
Abstract
Time-resolved optical measurements of electron-spin dynamics in modulation-doped InGaAs quantum wells are used to explore electron spin coherence times and spin precession frequencies in a regime where an out-of-plane magnetic field quantizes the states of a two-dimensional electron gas into Landau levels. Oscillatory features in the transverse spin coherence time and effective g factor as a function of the applied magnetic field exhibit a correspondence with Shubnikov-de Haas oscillations, illustrating a coupling between spin and orbital eigenstates. We present a theoretical model in which inhomogeneous dephasing due to the population of different Landau levels limits the spin coherence time and captures the essential experimental results.
Details
- Title: Subtitle
- Control of electron-spin coherence using Landau level quantization in a two-dimensional electron gas
- Creators
- V Sih - University of California, Santa BarbaraW. H Lau - University of California, Santa BarbaraR. C Myers - University of California, Santa BarbaraA. C Gossard - University of California, Santa BarbaraM. E Flatte - University of IowaD. D Awschalom - Quantum Group (United States)
- Resource Type
- Journal article
- Publication Details
- Physical review. B, Condensed matter and materials physics, Vol.70(16), pp.161313.1-161313.4
- DOI
- 10.1103/PhysRevB.70.161313
- ISSN
- 1098-0121
- eISSN
- 1550-235X
- Publisher
- American Physical Society
- Language
- English
- Date published
- 10/01/2004
- Academic Unit
- Electrical and Computer Engineering; Physics and Astronomy
- Record Identifier
- 9984428808802771
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