g-Factor Modification in a Bulk InGaAs Epilayer by an In-plane Electric Field
| Autor: | Luengo-Kovac, M., Macmahon, M., Huang, S., Goldman, R. S., Sih, V. |
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| Rok vydání: | 2015 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevB.91.201110 |
| Popis: | 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. Comment: 5 pages, 4 figures |
| Databáze: | arXiv |
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