Large exchange interactions in the electron gas of GaAs quantum wells

A. Pinczuk; S. Schmitt-Rink; G. Danan; J. P. Valladares; L. N. Pfeiffer; K. W. West

doi:10.1103/PhysRevLett.63.1633

Large exchange interactions in the electron gas of GaAs quantum wells

A. Pinczuk, S. Schmitt-Rink, G. Danan, J. P. Valladares, L. N. Pfeiffer, K. W. West

Research output: Contribution to journal › Article › peer-review

222 Scopus citations

Abstract

Inelastic-light-scattering measurements show that exchange Coulomb interactions in the two-dimensional electron gas of GaAs microstructures are more important than previously anticipated. Small-wave-vector spectra from modulation-doped quantum wells exhibit unexpected single-particle intersubband transitions in addition to collective spin-density and charge-density modes. From the measured spectral energies the direct and exchange intersubband Coulomb interactions are determined and found to be of comparable strengths.

Original language	English (US)
Pages (from-to)	1633-1636
Number of pages	4
Journal	Physical review letters
Volume	63
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevLett.63.1633
State	Published - 1989
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.63.1633

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title = "Large exchange interactions in the electron gas of GaAs quantum wells",

abstract = "Inelastic-light-scattering measurements show that exchange Coulomb interactions in the two-dimensional electron gas of GaAs microstructures are more important than previously anticipated. Small-wave-vector spectra from modulation-doped quantum wells exhibit unexpected single-particle intersubband transitions in addition to collective spin-density and charge-density modes. From the measured spectral energies the direct and exchange intersubband Coulomb interactions are determined and found to be of comparable strengths.",

author = "A. Pinczuk and S. Schmitt-Rink and G. Danan and Valladares, \{J. P.\} and Pfeiffer, \{L. N.\} and West, \{K. W.\}",

year = "1989",

doi = "10.1103/PhysRevLett.63.1633",

language = "English (US)",

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AU - Pinczuk, A.

AU - Schmitt-Rink, S.

AU - Danan, G.

AU - Valladares, J. P.

AU - Pfeiffer, L. N.

AU - West, K. W.

PY - 1989

Y1 - 1989

N2 - Inelastic-light-scattering measurements show that exchange Coulomb interactions in the two-dimensional electron gas of GaAs microstructures are more important than previously anticipated. Small-wave-vector spectra from modulation-doped quantum wells exhibit unexpected single-particle intersubband transitions in addition to collective spin-density and charge-density modes. From the measured spectral energies the direct and exchange intersubband Coulomb interactions are determined and found to be of comparable strengths.

AB - Inelastic-light-scattering measurements show that exchange Coulomb interactions in the two-dimensional electron gas of GaAs microstructures are more important than previously anticipated. Small-wave-vector spectra from modulation-doped quantum wells exhibit unexpected single-particle intersubband transitions in addition to collective spin-density and charge-density modes. From the measured spectral energies the direct and exchange intersubband Coulomb interactions are determined and found to be of comparable strengths.

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U2 - 10.1103/PhysRevLett.63.1633

DO - 10.1103/PhysRevLett.63.1633

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C2 - 10040629

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SP - 1633

EP - 1636

JO - Physical review letters

JF - Physical review letters

IS - 15

ER -

Large exchange interactions in the electron gas of GaAs quantum wells

Abstract

All Science Journal Classification (ASJC) codes

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