Spatial Imaging and Mechanical Control of Spin Coherence in Strained GaAs Epilayers

Details Spatial Imaging and Mechanical Control of Spin Coherence in Strained GaAs Epilayers Spatial Imaging and Mechanical Control of Spin Coherence in Strained GaAs Epilayers

2005-11-22

arxiv.org/abs/cond-mat/0511562v1

Physics

Condensed Matter

Materials Science

11 pages, 3 figures

Scientific paper

10.1063/1.2210794

The effect of uniaxial tensile strain on spin coherence in n-type GaAs epilayers is probed using time-resolved Kerr rotation, photoluminescence, and optically-detected nuclear magnetic resonance spectroscopies. The bandgap, electron spin lifetime, electron g-factor, and nuclear quadrupole splitting are simultaneously imaged over millimeter scale areas of the epilayers for continuously varying values of strain. All-optical nuclear magnetic resonance techniques allow access to the strain induced nuclear quadrupolar resonance splitting in field regimes not easily addressable using conventional optically-detected nuclear magnetic resonance.

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