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g factor of electrons in an InAs quantum well

1987; American Physical Society; Volume: 35; Issue: 14 Linguagem: Inglês

10.1103/physrevb.35.7729

1095-3795

T. P. Smith, F. F. Fang,

Advanced Chemical Physics Studies

We have studied the spin splitting of Landau levels for a two-dimensional electron gas in an InAs/GaSb single quantum well. The effective g factor, ${g}^{\mathrm{*}}$, is between 7.8 and 8.7 which is below the bulk value. The reduction in ${g}^{\mathrm{*}}$ is due to nonparabolicity effects resulting from confinement of free electrons to a narrow quantum well. Under these circumstances ${g}^{\mathrm{*}}$ enhancement due to many-body effects is smaller than the reduction due to nonparabolicity.