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arXiv · 1501.07302

g-Factor Modification in a Bulk InGaAs Epilayer by an In-plane Electric Field

M. Luengo-Kovac·M. Macmahon·S. Huang·R. S. Goldman·V. Sih
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Abstract

We report on the modification of the g-factor by an in-plane electric field in an In$_{0.031}$Ga$_{0.969}$As epilayer. We performed external magnetic field scans of the Kerr rotation of the InGaAs film in order to independently determine the g-factor and the spin-orbit fields. The g-factor increases from $-0.4473\pm0.0001$ at 0 V/cm to $-0.4419\pm0.0001$ at 25 V/cm applied along the [1$\overline{1}$0] crystal axis. In addition, spatially-resolved spin measurements show a g-factor dependence on diffusive velocity. The change in g-factor with electric field can have a large effect on the determination of the internal spin-orbit and nuclear fields from Larmor precession frequency measurements.

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M. Luengo-Kovac, M. Macmahon, S. Huang, R. S. Goldman, V. Sih. 2015-03-31. g-Factor Modification in a Bulk InGaAs Epilayer by an In-plane Electric Field. https://doi.org/10.1103/physrevb.91.201110

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