Light scattering by low lying quasiparticle excitations in the fractional quantum Hall regime

C. F. Hirjibehedin; Irene Dujovne; A. Pinczuk; B. S. Dennis; L. N. Pfeiffer; K. W. West

doi:10.1016/j.physe.2003.09.026

Light scattering by low lying quasiparticle excitations in the fractional quantum Hall regime

C. F. Hirjibehedin, Irene Dujovne, A. Pinczuk, B. S. Dennis, L. N. Pfeiffer, K. W. West

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

Abstract

Low lying excitations of electron liquids in the fractional quantum Hall (FQH) regime are studied by resonant inelastic light scattering methods. We present here results from charge and spin excitations of FQH states in the lowest spin-split Landau levels that are of current interest. In the range of filling factors 2/5 ≥ ν ≥ 1/3, we find evidence that low-energy quasiparticle excitations can be interpreted with spin-split composite fermion quasi-Landau levels. At FQH states around ν = 3/2, we find well-defined excitations at 4/3 and 8/5 that are consistent with a spin-unpolarized population of quasi-Landau levels.

Original language	English (US)
Pages (from-to)	103-110
Number of pages	8
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	20
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physe.2003.09.026
State	Published - Dec 2003
Externally published	Yes
Event	Proceedings of the International Symposium at Quantum Hall Effect - Stuttgart, Germany Duration: Jul 2 2003 → Jul 5 2003

All Science Journal Classification (ASJC) codes

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

Keywords

Fractional quantum Hall effect
Inelastic light scattering
Low lying excitations

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10.1016/j.physe.2003.09.026

Cite this

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title = "Light scattering by low lying quasiparticle excitations in the fractional quantum Hall regime",

abstract = "Low lying excitations of electron liquids in the fractional quantum Hall (FQH) regime are studied by resonant inelastic light scattering methods. We present here results from charge and spin excitations of FQH states in the lowest spin-split Landau levels that are of current interest. In the range of filling factors 2/5 ≥ ν ≥ 1/3, we find evidence that low-energy quasiparticle excitations can be interpreted with spin-split composite fermion quasi-Landau levels. At FQH states around ν = 3/2, we find well-defined excitations at 4/3 and 8/5 that are consistent with a spin-unpolarized population of quasi-Landau levels.",

keywords = "Fractional quantum Hall effect, Inelastic light scattering, Low lying excitations",

author = "Hirjibehedin, {C. F.} and Irene Dujovne and A. Pinczuk and Dennis, {B. S.} and Pfeiffer, {L. N.} and West, {K. W.}",

year = "2003",

month = dec,

doi = "10.1016/j.physe.2003.09.026",

language = "English (US)",

volume = "20",

pages = "103--110",

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

issn = "1386-9477",

publisher = "Elsevier B.V.",

number = "1-2",

note = "Proceedings of the International Symposium at Quantum Hall Effect ; Conference date: 02-07-2003 Through 05-07-2003",

}

TY - JOUR

T1 - Light scattering by low lying quasiparticle excitations in the fractional quantum Hall regime

AU - Hirjibehedin, C. F.

AU - Dujovne, Irene

AU - Pinczuk, A.

AU - Dennis, B. S.

AU - Pfeiffer, L. N.

AU - West, K. W.

PY - 2003/12

Y1 - 2003/12

N2 - Low lying excitations of electron liquids in the fractional quantum Hall (FQH) regime are studied by resonant inelastic light scattering methods. We present here results from charge and spin excitations of FQH states in the lowest spin-split Landau levels that are of current interest. In the range of filling factors 2/5 ≥ ν ≥ 1/3, we find evidence that low-energy quasiparticle excitations can be interpreted with spin-split composite fermion quasi-Landau levels. At FQH states around ν = 3/2, we find well-defined excitations at 4/3 and 8/5 that are consistent with a spin-unpolarized population of quasi-Landau levels.

AB - Low lying excitations of electron liquids in the fractional quantum Hall (FQH) regime are studied by resonant inelastic light scattering methods. We present here results from charge and spin excitations of FQH states in the lowest spin-split Landau levels that are of current interest. In the range of filling factors 2/5 ≥ ν ≥ 1/3, we find evidence that low-energy quasiparticle excitations can be interpreted with spin-split composite fermion quasi-Landau levels. At FQH states around ν = 3/2, we find well-defined excitations at 4/3 and 8/5 that are consistent with a spin-unpolarized population of quasi-Landau levels.

KW - Fractional quantum Hall effect

KW - Inelastic light scattering

KW - Low lying excitations

UR - http://www.scopus.com/inward/record.url?scp=0344064195&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0344064195&partnerID=8YFLogxK

U2 - 10.1016/j.physe.2003.09.026

DO - 10.1016/j.physe.2003.09.026

M3 - Conference article

AN - SCOPUS:0344064195

SN - 1386-9477

VL - 20

SP - 103

EP - 110

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 1-2

T2 - Proceedings of the International Symposium at Quantum Hall Effect

Y2 - 2 July 2003 through 5 July 2003

ER -

Light scattering by low lying quasiparticle excitations in the fractional quantum Hall regime

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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