Inelastic light scattering by collective excitations in the fractional quantum Hall regime

Moonsoo Kang; A. Pinczuk; B. S. Dennis; M. A. Eriksson; L. N. Pfeiffer; K. W. West

doi:10.1016/S1386-9477(99)00051-X

Inelastic light scattering by collective excitations in the fractional quantum Hall regime

Moonsoo Kang, A. Pinczuk, B. S. Dennis, M. A. Eriksson, L. N. Pfeiffer, K. W. West

Research output: Contribution to journal › Conference article › peer-review

2 Scopus citations

Abstract

We report an inelastic light scattering study of long wavelength collective gap excitations of fractional quantum Hall (FQH) states at ν = p/(2p+1) for 1/3≤v≤2/3. The ν-dependence of the gap energy suggests a collapse of the collective excitation gap near ν = 1/2 . In a range of filling factors close to ν = 1/2 , where the FQH gap is believed to collapse, we observe a collective excitation mode that exists only at temperatures below 150 mK.

Original language	English (US)
Pages (from-to)	69-71
Number of pages	3
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	6
Issue number	1
DOIs	https://doi.org/10.1016/S1386-9477(99)00051-X
State	Published - Feb 2000
Externally published	Yes
Event	13th International Conference on the Electronic Properties of Two-Dimensional Systems (EP2DS-13) - Ottawa, Ont, Can Duration: Aug 1 1999 → Aug 6 1999

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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10.1016/S1386-9477(99)00051-X

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title = "Inelastic light scattering by collective excitations in the fractional quantum Hall regime",

abstract = "We report an inelastic light scattering study of long wavelength collective gap excitations of fractional quantum Hall (FQH) states at ν = p/(2p+1) for 1/3≤v≤2/3. The ν-dependence of the gap energy suggests a collapse of the collective excitation gap near ν = 1/2 . In a range of filling factors close to ν = 1/2 , where the FQH gap is believed to collapse, we observe a collective excitation mode that exists only at temperatures below 150 mK.",

author = "Moonsoo Kang and A. Pinczuk and Dennis, {B. S.} and Eriksson, {M. A.} and Pfeiffer, {L. N.} and West, {K. W.}",

year = "2000",

month = feb,

doi = "10.1016/S1386-9477(99)00051-X",

language = "English (US)",

volume = "6",

pages = "69--71",

journal = "Physica E: Low-Dimensional Systems and Nanostructures",

issn = "1386-9477",

publisher = "Elsevier B.V.",

number = "1",

note = "13th International Conference on the Electronic Properties of Two-Dimensional Systems (EP2DS-13) ; Conference date: 01-08-1999 Through 06-08-1999",

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TY - JOUR

T1 - Inelastic light scattering by collective excitations in the fractional quantum Hall regime

AU - Kang, Moonsoo

AU - Pinczuk, A.

AU - Dennis, B. S.

AU - Eriksson, M. A.

AU - Pfeiffer, L. N.

AU - West, K. W.

PY - 2000/2

Y1 - 2000/2

N2 - We report an inelastic light scattering study of long wavelength collective gap excitations of fractional quantum Hall (FQH) states at ν = p/(2p+1) for 1/3≤v≤2/3. The ν-dependence of the gap energy suggests a collapse of the collective excitation gap near ν = 1/2 . In a range of filling factors close to ν = 1/2 , where the FQH gap is believed to collapse, we observe a collective excitation mode that exists only at temperatures below 150 mK.

AB - We report an inelastic light scattering study of long wavelength collective gap excitations of fractional quantum Hall (FQH) states at ν = p/(2p+1) for 1/3≤v≤2/3. The ν-dependence of the gap energy suggests a collapse of the collective excitation gap near ν = 1/2 . In a range of filling factors close to ν = 1/2 , where the FQH gap is believed to collapse, we observe a collective excitation mode that exists only at temperatures below 150 mK.

UR - http://www.scopus.com/inward/record.url?scp=0034139126&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034139126&partnerID=8YFLogxK

U2 - 10.1016/S1386-9477(99)00051-X

DO - 10.1016/S1386-9477(99)00051-X

M3 - Conference article

AN - SCOPUS:0034139126

SN - 1386-9477

VL - 6

SP - 69

EP - 71

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 1

T2 - 13th International Conference on the Electronic Properties of Two-Dimensional Systems (EP2DS-13)

Y2 - 1 August 1999 through 6 August 1999

ER -

Inelastic light scattering by collective excitations in the fractional quantum Hall regime

Abstract

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