Dispersive collective excitation modes in the quantum Hall regime

L. L. Sohn; A. Pinczuk; B. S. Dennis; L. N. Pfeiffer; K. W. West; L. Brey

doi:10.1016/0038-1098(94)00828-0

Dispersive collective excitation modes in the quantum Hall regime

L. L. Sohn, A. Pinczuk, B. S. Dennis, L. N. Pfeiffer, K. W. West, L. Brey

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

13 Scopus citations

Abstract

Inelastic light scattering on a weakly density-modulated 2D electron system accesses the large wavevectors needed to probe electron interactions in quantum Hall states. For v = 1, existence of well-defined intersubband and inter-Landau-level dispersive collective modes is demonstrated. Best agreement with theoretical predictions requires an induced-wave-vector scheme q_m = m( π d), where m = integer and d is a partial period of the modulation. Wave vectors q_m can be induced when altering strips of compressible and incompressible fluids decouple and confine electron states to strips of width d.

Original language	English (US)
Pages (from-to)	897-902
Number of pages	6
Journal	Solid State Communications
Volume	93
Issue number	11
DOIs	https://doi.org/10.1016/0038-1098(94)00828-0
State	Published - Mar 1995
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Chemistry
Condensed Matter Physics
Materials Chemistry

Keywords

A. quantum wells
B. nanofabrications
D. electron-electron interactions
D. optical properties
D. quantum Hall effect

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10.1016/0038-1098(94)00828-0

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title = "Dispersive collective excitation modes in the quantum Hall regime",

abstract = "Inelastic light scattering on a weakly density-modulated 2D electron system accesses the large wavevectors needed to probe electron interactions in quantum Hall states. For v = 1, existence of well-defined intersubband and inter-Landau-level dispersive collective modes is demonstrated. Best agreement with theoretical predictions requires an induced-wave-vector scheme qm = m( π d), where m = integer and d is a partial period of the modulation. Wave vectors qm can be induced when altering strips of compressible and incompressible fluids decouple and confine electron states to strips of width d.",

keywords = "A. quantum wells, B. nanofabrications, D. electron-electron interactions, D. optical properties, D. quantum Hall effect",

author = "Sohn, {L. L.} and A. Pinczuk and Dennis, {B. S.} and Pfeiffer, {L. N.} and West, {K. W.} and L. Brey",

year = "1995",

month = mar,

doi = "10.1016/0038-1098(94)00828-0",

language = "English (US)",

volume = "93",

pages = "897--902",

journal = "Solid State Communications",

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TY - JOUR

T1 - Dispersive collective excitation modes in the quantum Hall regime

AU - Sohn, L. L.

AU - Pinczuk, A.

AU - Dennis, B. S.

AU - Pfeiffer, L. N.

AU - West, K. W.

AU - Brey, L.

PY - 1995/3

Y1 - 1995/3

N2 - Inelastic light scattering on a weakly density-modulated 2D electron system accesses the large wavevectors needed to probe electron interactions in quantum Hall states. For v = 1, existence of well-defined intersubband and inter-Landau-level dispersive collective modes is demonstrated. Best agreement with theoretical predictions requires an induced-wave-vector scheme qm = m( π d), where m = integer and d is a partial period of the modulation. Wave vectors qm can be induced when altering strips of compressible and incompressible fluids decouple and confine electron states to strips of width d.

AB - Inelastic light scattering on a weakly density-modulated 2D electron system accesses the large wavevectors needed to probe electron interactions in quantum Hall states. For v = 1, existence of well-defined intersubband and inter-Landau-level dispersive collective modes is demonstrated. Best agreement with theoretical predictions requires an induced-wave-vector scheme qm = m( π d), where m = integer and d is a partial period of the modulation. Wave vectors qm can be induced when altering strips of compressible and incompressible fluids decouple and confine electron states to strips of width d.

KW - A. quantum wells

KW - B. nanofabrications

KW - D. electron-electron interactions

KW - D. optical properties

KW - D. quantum Hall effect

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U2 - 10.1016/0038-1098(94)00828-0

DO - 10.1016/0038-1098(94)00828-0

M3 - Article

AN - SCOPUS:0029276303

SN - 0038-1098

VL - 93

SP - 897

EP - 902

JO - Solid State Communications

JF - Solid State Communications

IS - 11

ER -

Dispersive collective excitation modes in the quantum Hall regime

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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