Even denominator filling factors in the thermoelectric power of a 2DEG

S. A J Wiegers; B. Tieke; U. Zeitler; R. Fletcher; A. K. Geim; J. C. Maan; M. Henini

doi:10.1007/BF02570217

Even denominator filling factors in the thermoelectric power of a 2DEG

S. A J Wiegers, B. Tieke, U. Zeitler, R. Fletcher, A. K. Geim, J. C. Maan, M. Henini

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Abstract

We have investigated the interaction of phonons with a 2DEG in the FQH regime with phonon drag thermoelectric power (TEP). We find that the TEP at filling factors with the same even denominator is identical and at other even denominator filling factors they differ only by a constant. Assuming these states to be Composite Fermions (CF), we can explain our observations by extending a zero magnetic field theory for phonon drag to the CF-phonon interaction. This analysis is further corroborated by the observed T4 dependence of the CF TEP.

Original language	English
Pages (from-to)	2461-2462
Number of pages	1
Journal	Czechoslovak Journal of Physics
Volume	46
Issue number	5
DOIs	https://doi.org/10.1007/BF02570217
Publication status	Published - 1996

Keywords

phonon-drag contribution
3d phonons
thermopower

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10.1007/BF02570217

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title = "Even denominator filling factors in the thermoelectric power of a 2DEG",

abstract = "We have investigated the interaction of phonons with a 2DEG in the FQH regime with phonon drag thermoelectric power (TEP). We find that the TEP at filling factors with the same even denominator is identical and at other even denominator filling factors they differ only by a constant. Assuming these states to be Composite Fermions (CF), we can explain our observations by extending a zero magnetic field theory for phonon drag to the CF-phonon interaction. This analysis is further corroborated by the observed T4 dependence of the CF TEP.",

keywords = "phonon-drag contribution, 3d phonons, thermopower",

author = "Wiegers, {S. A J} and B. Tieke and U. Zeitler and R. Fletcher and Geim, {A. K.} and Maan, {J. C.} and M. Henini",

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TY - JOUR

T1 - Even denominator filling factors in the thermoelectric power of a 2DEG

AU - Wiegers, S. A J

AU - Tieke, B.

AU - Zeitler, U.

AU - Fletcher, R.

AU - Geim, A. K.

AU - Maan, J. C.

AU - Henini, M.

N1 - Suppl. 5 Vl442 Times Cited:0 Cited References Count:5

PY - 1996

Y1 - 1996

N2 - We have investigated the interaction of phonons with a 2DEG in the FQH regime with phonon drag thermoelectric power (TEP). We find that the TEP at filling factors with the same even denominator is identical and at other even denominator filling factors they differ only by a constant. Assuming these states to be Composite Fermions (CF), we can explain our observations by extending a zero magnetic field theory for phonon drag to the CF-phonon interaction. This analysis is further corroborated by the observed T4 dependence of the CF TEP.

AB - We have investigated the interaction of phonons with a 2DEG in the FQH regime with phonon drag thermoelectric power (TEP). We find that the TEP at filling factors with the same even denominator is identical and at other even denominator filling factors they differ only by a constant. Assuming these states to be Composite Fermions (CF), we can explain our observations by extending a zero magnetic field theory for phonon drag to the CF-phonon interaction. This analysis is further corroborated by the observed T4 dependence of the CF TEP.

KW - phonon-drag contribution

KW - 3d phonons

KW - thermopower

U2 - 10.1007/BF02570217

DO - 10.1007/BF02570217

M3 - Article

SN - 0011-4626

VL - 46

SP - 2461

EP - 2462

JO - Czechoslovak Journal of Physics

JF - Czechoslovak Journal of Physics

IS - 5

ER -

Even denominator filling factors in the thermoelectric power of a 2DEG

Abstract

Keywords

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