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

E. Tutuc; S. Melinte; M. Shayegan

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

E. Tutuc, S. Melinte, M. 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 language	English (US)
Article number	036805
Pages (from-to)	036805/1-036805/4
Journal	Physical review letters
Volume	88
Issue number	3
State	Published - Jan 21 2002

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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title = "Spin polarization and g factor of a dilute GaAs two-dimensional electron system",

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.",

author = "E. Tutuc and S. Melinte and M. Shayegan",

year = "2002",

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T1 - Spin polarization and g factor of a dilute GaAs two-dimensional electron system

AU - Tutuc, E.

AU - Melinte, S.

AU - Shayegan, M.

PY - 2002/1/21

Y1 - 2002/1/21

N2 - 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.

AB - 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.

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ER -

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

Abstract

All Science Journal Classification (ASJC) codes

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