Spin polarization and g factor of a dilute GaAs two-dimensional electron system

E. Tutuc, S. Melinte, Mansour Shayegan

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Abstract

Measurements of the spin polarization of a very high quality, dilute two-dimensional electron system (2DES) in a modulation doped GaAs/AlGaAs heterostructures were carried out as a function of an in-plane magnetic field. Via transport measurements, the magnetic field above which the 2DES becomes fully spin polarized was found, and from this field, the effective g factor (g*) was determined. Results show that as the density is lowered from 6.5 to 0.8 × 1010 cm-2, the measured g* decreases from 2.7 to 1.3.

Original languageEnglish (US)
JournalPhysical Review Letters
Volume88
Issue number3
StatePublished - Jan 21 2002

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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