Spin texture and magnetoroton excitations at ν=1/3

Javier G. Groshaus; Irene Dujovne; Yann Gallais; Cyrus F. Hirjibehedin; Aron Pinczuk; Yan Wen Tan; Horst Stormer; Brian S. Dennis; Loren N. Pfeiffer; Ken W. West

doi:10.1103/PhysRevLett.100.046804

Spin texture and magnetoroton excitations at ν=1/3

Javier G. Groshaus, Irene Dujovne, Yann Gallais, Cyrus F. Hirjibehedin, Aron Pinczuk, Yan Wen Tan, Horst Stormer, Brian S. Dennis, Loren N. Pfeiffer, Ken W. West

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

23 Scopus citations

Abstract

Neutral spin texture (ST) excitations at ν=1/3 are directly observed for the first time by resonant inelastic light scattering. They are determined to involve two simultaneous spin flips. At low magnetic fields, the ST energy is below that of the magnetoroton minimum. With increasing in-plane magnetic field these mode energies cross at a critical ratio of the Zeeman and Coulomb energies of ηc=0.020±0.001. Surprisingly, the intensity of the ST mode grows with temperature in the range in which the magnetoroton modes collapse. The temperature dependence is interpreted in terms of a competition between coexisting phases supporting different excitations. We consider the role of the ST excitations in activated transport at ν=1/3.

Original language	English (US)
Article number	046804
Journal	Physical review letters
Volume	100
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.100.046804
State	Published - Jan 30 2008
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.100.046804

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title = "Spin texture and magnetoroton excitations at ν=1/3",

abstract = "Neutral spin texture (ST) excitations at ν=1/3 are directly observed for the first time by resonant inelastic light scattering. They are determined to involve two simultaneous spin flips. At low magnetic fields, the ST energy is below that of the magnetoroton minimum. With increasing in-plane magnetic field these mode energies cross at a critical ratio of the Zeeman and Coulomb energies of ηc=0.020±0.001. Surprisingly, the intensity of the ST mode grows with temperature in the range in which the magnetoroton modes collapse. The temperature dependence is interpreted in terms of a competition between coexisting phases supporting different excitations. We consider the role of the ST excitations in activated transport at ν=1/3.",

author = "Groshaus, {Javier G.} and Irene Dujovne and Yann Gallais and Hirjibehedin, {Cyrus F.} and Aron Pinczuk and Tan, {Yan Wen} and Horst Stormer and Dennis, {Brian S.} and Pfeiffer, {Loren N.} and West, {Ken W.}",

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T1 - Spin texture and magnetoroton excitations at ν=1/3

AU - Groshaus, Javier G.

AU - Dujovne, Irene

AU - Gallais, Yann

AU - Hirjibehedin, Cyrus F.

AU - Pinczuk, Aron

AU - Tan, Yan Wen

AU - Stormer, Horst

AU - Dennis, Brian S.

AU - Pfeiffer, Loren N.

AU - West, Ken W.

PY - 2008/1/30

Y1 - 2008/1/30

N2 - Neutral spin texture (ST) excitations at ν=1/3 are directly observed for the first time by resonant inelastic light scattering. They are determined to involve two simultaneous spin flips. At low magnetic fields, the ST energy is below that of the magnetoroton minimum. With increasing in-plane magnetic field these mode energies cross at a critical ratio of the Zeeman and Coulomb energies of ηc=0.020±0.001. Surprisingly, the intensity of the ST mode grows with temperature in the range in which the magnetoroton modes collapse. The temperature dependence is interpreted in terms of a competition between coexisting phases supporting different excitations. We consider the role of the ST excitations in activated transport at ν=1/3.

AB - Neutral spin texture (ST) excitations at ν=1/3 are directly observed for the first time by resonant inelastic light scattering. They are determined to involve two simultaneous spin flips. At low magnetic fields, the ST energy is below that of the magnetoroton minimum. With increasing in-plane magnetic field these mode energies cross at a critical ratio of the Zeeman and Coulomb energies of ηc=0.020±0.001. Surprisingly, the intensity of the ST mode grows with temperature in the range in which the magnetoroton modes collapse. The temperature dependence is interpreted in terms of a competition between coexisting phases supporting different excitations. We consider the role of the ST excitations in activated transport at ν=1/3.

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Spin texture and magnetoroton excitations at ν=1/3

Abstract

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