Angular dependent measurements of the ν = 5/2 fractional quantum Hall effect state at ultra-low temperatures

J. S. Xia; W. Pan; E. D. Adams; N. S. Sullivan; H. L. Stormer; D. C. Tsui; L. N. Pfeiffer; K. W. Baldwin; K. W. West

doi:10.1016/S1386-9477(02)01036-6

Angular dependent measurements of the ν = 5/2 fractional quantum Hall effect state at ultra-low temperatures

J. S. Xia, W. Pan, E. D. Adams, N. S. Sullivan, H. L. Stormer, D. C. Tsui, L. N. Pfeiffer, K. W. Baldwin, K. W. West

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

1 Scopus citations

Abstract

The spin polarization of the obscure even-denominator FQHE state at ν = 5/2 remains an open, but important question to answer. One method to address this question is to measure the angular dependence of its energy gap. Since the energy gap at ν = 5/2 is rather small, this kind of experiments is technically extraordinary challenging, due to the requirement of in situ rotation of the sample at ultra-low temperatures. We constructed a rotator, made from polycarbonate and operated hydraulically using liquid ³He. A sequence of experiments at ν = 5/2 clearly demonstrated the possibility of performing angular-dependent measurements at temperatures below 10 mK.

Original language	English (US)
Pages (from-to)	109-110
Number of pages	2
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	18
Issue number	1-3
DOIs	https://doi.org/10.1016/S1386-9477(02)01036-6
State	Published - May 2003
Externally published	Yes
Event	23rd International Conference on Low Temperature Physics - Hiroshima, Japan Duration: Aug 20 2002 → Aug 27 2002

All Science Journal Classification (ASJC) codes

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

Keywords

Even-denominator
Fractional quantum Hall effect
Rotator
Ultra-low temperature

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10.1016/S1386-9477(02)01036-6

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title = "Angular dependent measurements of the ν = 5/2 fractional quantum Hall effect state at ultra-low temperatures",

abstract = "The spin polarization of the obscure even-denominator FQHE state at ν = 5/2 remains an open, but important question to answer. One method to address this question is to measure the angular dependence of its energy gap. Since the energy gap at ν = 5/2 is rather small, this kind of experiments is technically extraordinary challenging, due to the requirement of in situ rotation of the sample at ultra-low temperatures. We constructed a rotator, made from polycarbonate and operated hydraulically using liquid 3He. A sequence of experiments at ν = 5/2 clearly demonstrated the possibility of performing angular-dependent measurements at temperatures below 10 mK.",

keywords = "Even-denominator, Fractional quantum Hall effect, Rotator, Ultra-low temperature",

author = "Xia, {J. S.} and W. Pan and Adams, {E. D.} and Sullivan, {N. S.} and Stormer, {H. L.} and Tsui, {D. C.} and Pfeiffer, {L. N.} and Baldwin, {K. W.} and West, {K. W.}",

year = "2003",

month = may,

doi = "10.1016/S1386-9477(02)01036-6",

language = "English (US)",

volume = "18",

pages = "109--110",

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

issn = "1386-9477",

publisher = "Elsevier",

number = "1-3",

note = "23rd International Conference on Low Temperature Physics ; Conference date: 20-08-2002 Through 27-08-2002",

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TY - JOUR

T1 - Angular dependent measurements of the ν = 5/2 fractional quantum Hall effect state at ultra-low temperatures

AU - Xia, J. S.

AU - Pan, W.

AU - Adams, E. D.

AU - Sullivan, N. S.

AU - Stormer, H. L.

AU - Tsui, D. C.

AU - Pfeiffer, L. N.

AU - Baldwin, K. W.

AU - West, K. W.

PY - 2003/5

Y1 - 2003/5

N2 - The spin polarization of the obscure even-denominator FQHE state at ν = 5/2 remains an open, but important question to answer. One method to address this question is to measure the angular dependence of its energy gap. Since the energy gap at ν = 5/2 is rather small, this kind of experiments is technically extraordinary challenging, due to the requirement of in situ rotation of the sample at ultra-low temperatures. We constructed a rotator, made from polycarbonate and operated hydraulically using liquid 3He. A sequence of experiments at ν = 5/2 clearly demonstrated the possibility of performing angular-dependent measurements at temperatures below 10 mK.

AB - The spin polarization of the obscure even-denominator FQHE state at ν = 5/2 remains an open, but important question to answer. One method to address this question is to measure the angular dependence of its energy gap. Since the energy gap at ν = 5/2 is rather small, this kind of experiments is technically extraordinary challenging, due to the requirement of in situ rotation of the sample at ultra-low temperatures. We constructed a rotator, made from polycarbonate and operated hydraulically using liquid 3He. A sequence of experiments at ν = 5/2 clearly demonstrated the possibility of performing angular-dependent measurements at temperatures below 10 mK.

KW - Even-denominator

KW - Fractional quantum Hall effect

KW - Rotator

KW - Ultra-low temperature

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UR - http://www.scopus.com/inward/citedby.url?scp=0037504593&partnerID=8YFLogxK

U2 - 10.1016/S1386-9477(02)01036-6

DO - 10.1016/S1386-9477(02)01036-6

M3 - Conference article

AN - SCOPUS:0037504593

SN - 1386-9477

VL - 18

SP - 109

EP - 110

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 1-3

T2 - 23rd International Conference on Low Temperature Physics

Y2 - 20 August 2002 through 27 August 2002

ER -

Angular dependent measurements of the ν = 5/2 fractional quantum Hall effect state at ultra-low temperatures

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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