Exchange enhancement of a spin-polarized 2D electron gas determined by optical-absorption spectroscopy

B. B. Goldberg; D. Heiman; A. Pinczuk

doi:10.1103/PhysRevLett.63.1102

Exchange enhancement of a spin-polarized 2D electron gas determined by optical-absorption spectroscopy

B. B. Goldberg^*, D. Heiman, A. Pinczuk

^*Corresponding author for this work

Physics and Astronomy

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36 Scopus citations

Abstract

A large exchange enhancement of the spin-splitting of a two-dimensional electron gas in GaAs has been determined from optical spectroscopy. When the Fermi energy is located between the spin-split electron states (=1), we observe a striking temperature dependence in the optical absorption of interband transitions associated with both spin levels. The absorption intensity of the transitions monitors the occupations of the spin-split levels. Analysis of the temperature dependence reveals an exchange enhancement of the electron g factor of 9.. AE

Original language	English (US)
Pages (from-to)	1102-1105
Number of pages	4
Journal	Physical Review Letters
Volume	63
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevLett.63.1102
State	Published - Jan 1 1989

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.63.1102

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title = "Exchange enhancement of a spin-polarized 2D electron gas determined by optical-absorption spectroscopy",

abstract = "A large exchange enhancement of the spin-splitting of a two-dimensional electron gas in GaAs has been determined from optical spectroscopy. When the Fermi energy is located between the spin-split electron states (=1), we observe a striking temperature dependence in the optical absorption of interband transitions associated with both spin levels. The absorption intensity of the transitions monitors the occupations of the spin-split levels. Analysis of the temperature dependence reveals an exchange enhancement of the electron g factor of 9.. AE",

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year = "1989",

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doi = "10.1103/PhysRevLett.63.1102",

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T1 - Exchange enhancement of a spin-polarized 2D electron gas determined by optical-absorption spectroscopy

AU - Goldberg, B. B.

AU - Heiman, D.

AU - Pinczuk, A.

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Y1 - 1989/1/1

N2 - A large exchange enhancement of the spin-splitting of a two-dimensional electron gas in GaAs has been determined from optical spectroscopy. When the Fermi energy is located between the spin-split electron states (=1), we observe a striking temperature dependence in the optical absorption of interband transitions associated with both spin levels. The absorption intensity of the transitions monitors the occupations of the spin-split levels. Analysis of the temperature dependence reveals an exchange enhancement of the electron g factor of 9.. AE

AB - A large exchange enhancement of the spin-splitting of a two-dimensional electron gas in GaAs has been determined from optical spectroscopy. When the Fermi energy is located between the spin-split electron states (=1), we observe a striking temperature dependence in the optical absorption of interband transitions associated with both spin levels. The absorption intensity of the transitions monitors the occupations of the spin-split levels. Analysis of the temperature dependence reveals an exchange enhancement of the electron g factor of 9.. AE

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JO - Physical Review Letters

JF - Physical Review Letters

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Exchange enhancement of a spin-polarized 2D electron gas determined by optical-absorption spectroscopy

Abstract

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