Spectroscopic measurement of large exchange enhancement of a spin-polarized 2D electron gas

A. Pinczuk; B. S. Dennis; D. Heiman; C. Kallin; L. Brey; C. Tejedor; S. Schmitt-Rink; L. N. Pfeiffer; K. W. West

doi:10.1103/PhysRevLett.68.3623

Spectroscopic measurement of large exchange enhancement of a spin-polarized 2D electron gas

A. Pinczuk, B. S. Dennis, D. Heiman, C. Kallin, L. Brey, C. Tejedor, S. Schmitt-Rink, L. N. Pfeiffer, K. W. West

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116 Scopus citations

Abstract

Exchange enhancements of the spin-polarized 2D electron gas are determined for the first time by inelastic light scattering from spin-flip inter-Landau-level and intersubband excitations. In the magnetic quantum limit =1 the splitting between long wavelength magnetoplasmons and spin-flip inter-Landau-level excitations is a direct spectroscopic measurement of the enhanced exchange energy. At =1 the enhancements in GaAs quantum wells are in agreement with the Hartree-Fock approximation.

Original language	English (US)
Pages (from-to)	3623-3626
Number of pages	4
Journal	Physical review letters
Volume	68
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.68.3623
State	Published - 1992
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.68.3623

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title = "Spectroscopic measurement of large exchange enhancement of a spin-polarized 2D electron gas",

abstract = "Exchange enhancements of the spin-polarized 2D electron gas are determined for the first time by inelastic light scattering from spin-flip inter-Landau-level and intersubband excitations. In the magnetic quantum limit =1 the splitting between long wavelength magnetoplasmons and spin-flip inter-Landau-level excitations is a direct spectroscopic measurement of the enhanced exchange energy. At =1 the enhancements in GaAs quantum wells are in agreement with the Hartree-Fock approximation.",

author = "A. Pinczuk and Dennis, {B. S.} and D. Heiman and C. Kallin and L. Brey and C. Tejedor and S. Schmitt-Rink and Pfeiffer, {L. N.} and West, {K. W.}",

year = "1992",

doi = "10.1103/PhysRevLett.68.3623",

language = "English (US)",

volume = "68",

pages = "3623--3626",

journal = "Physical review letters",

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T1 - Spectroscopic measurement of large exchange enhancement of a spin-polarized 2D electron gas

AU - Pinczuk, A.

AU - Dennis, B. S.

AU - Heiman, D.

AU - Kallin, C.

AU - Brey, L.

AU - Tejedor, C.

AU - Schmitt-Rink, S.

AU - Pfeiffer, L. N.

AU - West, K. W.

PY - 1992

Y1 - 1992

N2 - Exchange enhancements of the spin-polarized 2D electron gas are determined for the first time by inelastic light scattering from spin-flip inter-Landau-level and intersubband excitations. In the magnetic quantum limit =1 the splitting between long wavelength magnetoplasmons and spin-flip inter-Landau-level excitations is a direct spectroscopic measurement of the enhanced exchange energy. At =1 the enhancements in GaAs quantum wells are in agreement with the Hartree-Fock approximation.

AB - Exchange enhancements of the spin-polarized 2D electron gas are determined for the first time by inelastic light scattering from spin-flip inter-Landau-level and intersubband excitations. In the magnetic quantum limit =1 the splitting between long wavelength magnetoplasmons and spin-flip inter-Landau-level excitations is a direct spectroscopic measurement of the enhanced exchange energy. At =1 the enhancements in GaAs quantum wells are in agreement with the Hartree-Fock approximation.

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U2 - 10.1103/PhysRevLett.68.3623

DO - 10.1103/PhysRevLett.68.3623

M3 - Article

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VL - 68

SP - 3623

EP - 3626

JO - Physical review letters

JF - Physical review letters

IS - 24

ER -

Spectroscopic measurement of large exchange enhancement of a spin-polarized 2D electron gas

Abstract

All Science Journal Classification (ASJC) codes

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