Femtosecond dynamics of excitons under extreme magnetic confinement

J. B. Stark, W. H. Knox, D. S. Chemla, W. Schäfer, S. Schmitt-Rink, Charles A Stafford

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

The resonant optical nonlinearities of GaAs/AlGaAs quantum wells are measured with femtosecond time resolution, as the quasi-two-dimensional states are further confined into quasizero dimensions by a perpendicular magnetic field. We apply fields up to 12 T to demonstrate that exciton-exciton Coulomb interactions are strongly modified by quasi-zero dimensional confinement, in agreement with many-body theory. These measurements demonstrate for the first time the remarkable result that at high magnetic fields an ensemble of 1s, electron-hole pairs behaves like a gas of noninteracting particles.

Original languageEnglish (US)
Pages (from-to)3033-3036
Number of pages4
JournalPhysical Review Letters
Volume65
Issue number24
DOIs
StatePublished - 1990
Externally publishedYes

Fingerprint

excitons
magnetic fields
aluminum gallium arsenides
nonlinearity
quantum wells
gases
interactions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Stark, J. B., Knox, W. H., Chemla, D. S., Schäfer, W., Schmitt-Rink, S., & Stafford, C. A. (1990). Femtosecond dynamics of excitons under extreme magnetic confinement. Physical Review Letters, 65(24), 3033-3036. https://doi.org/10.1103/PhysRevLett.65.3033

Femtosecond dynamics of excitons under extreme magnetic confinement. / Stark, J. B.; Knox, W. H.; Chemla, D. S.; Schäfer, W.; Schmitt-Rink, S.; Stafford, Charles A.

In: Physical Review Letters, Vol. 65, No. 24, 1990, p. 3033-3036.

Research output: Contribution to journalArticle

Stark, JB, Knox, WH, Chemla, DS, Schäfer, W, Schmitt-Rink, S & Stafford, CA 1990, 'Femtosecond dynamics of excitons under extreme magnetic confinement', Physical Review Letters, vol. 65, no. 24, pp. 3033-3036. https://doi.org/10.1103/PhysRevLett.65.3033
Stark, J. B. ; Knox, W. H. ; Chemla, D. S. ; Schäfer, W. ; Schmitt-Rink, S. ; Stafford, Charles A. / Femtosecond dynamics of excitons under extreme magnetic confinement. In: Physical Review Letters. 1990 ; Vol. 65, No. 24. pp. 3033-3036.
@article{e96e2062adac48aa841cab9fbeaf5d6b,
title = "Femtosecond dynamics of excitons under extreme magnetic confinement",
abstract = "The resonant optical nonlinearities of GaAs/AlGaAs quantum wells are measured with femtosecond time resolution, as the quasi-two-dimensional states are further confined into quasizero dimensions by a perpendicular magnetic field. We apply fields up to 12 T to demonstrate that exciton-exciton Coulomb interactions are strongly modified by quasi-zero dimensional confinement, in agreement with many-body theory. These measurements demonstrate for the first time the remarkable result that at high magnetic fields an ensemble of 1s, electron-hole pairs behaves like a gas of noninteracting particles.",
author = "Stark, {J. B.} and Knox, {W. H.} and Chemla, {D. S.} and W. Sch{\"a}fer and S. Schmitt-Rink and Stafford, {Charles A}",
year = "1990",
doi = "10.1103/PhysRevLett.65.3033",
language = "English (US)",
volume = "65",
pages = "3033--3036",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "24",

}

TY - JOUR

T1 - Femtosecond dynamics of excitons under extreme magnetic confinement

AU - Stark, J. B.

AU - Knox, W. H.

AU - Chemla, D. S.

AU - Schäfer, W.

AU - Schmitt-Rink, S.

AU - Stafford, Charles A

PY - 1990

Y1 - 1990

N2 - The resonant optical nonlinearities of GaAs/AlGaAs quantum wells are measured with femtosecond time resolution, as the quasi-two-dimensional states are further confined into quasizero dimensions by a perpendicular magnetic field. We apply fields up to 12 T to demonstrate that exciton-exciton Coulomb interactions are strongly modified by quasi-zero dimensional confinement, in agreement with many-body theory. These measurements demonstrate for the first time the remarkable result that at high magnetic fields an ensemble of 1s, electron-hole pairs behaves like a gas of noninteracting particles.

AB - The resonant optical nonlinearities of GaAs/AlGaAs quantum wells are measured with femtosecond time resolution, as the quasi-two-dimensional states are further confined into quasizero dimensions by a perpendicular magnetic field. We apply fields up to 12 T to demonstrate that exciton-exciton Coulomb interactions are strongly modified by quasi-zero dimensional confinement, in agreement with many-body theory. These measurements demonstrate for the first time the remarkable result that at high magnetic fields an ensemble of 1s, electron-hole pairs behaves like a gas of noninteracting particles.

UR - http://www.scopus.com/inward/record.url?scp=0001480269&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001480269&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.65.3033

DO - 10.1103/PhysRevLett.65.3033

M3 - Article

AN - SCOPUS:0001480269

VL - 65

SP - 3033

EP - 3036

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 24

ER -