Anomalous stability of ν = 1 bilayer quantum hall state

A. Sawada; Z. F. Ezawa; H. Ohno; Y. Horikoshi; O. Sugie; S. Kishimoto; F. Matsukura; Y. Ohno; M. Yasumoto

doi:10.1016/S0038-1098(97)00221-4

Anomalous stability of ν = 1 bilayer quantum hall state

A. Sawada, Z. F. Ezawa, H. Ohno, Y. Horikoshi, O. Sugie, S. Kishimoto, F. Matsukura, Y. Ohno, M. Yasumoto

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Abstract

We have studied the fractional and integer quantum Hall (QH) effects in a high-mobility double-layer two-dimensional electron system. We have compared the "stability" of the QH state in balanced and unbalanced double quantum wells. The behavior of the ν = 1 QH state is found to be strikingly different from all others. It is anomalously stable, though all other states decay, as the electron density is made unbalanced between the two quantum wells. We interpret the peculiar features of the vν = 1 state as consequences of the interlayer quantum coherence developed spontaneously on the basis of the composite-boson picture.

Original language	English
Pages (from-to)	447-451
Number of pages	5
Journal	Solid State Communications
Volume	103
Issue number	8
DOIs	https://doi.org/10.1016/S0038-1098(97)00221-4
Publication status	Published - 1997 Aug

Keywords

A. heterojunctions
A. quantum wells
D. fractional quantum Hall effect
D. quantum Hall effect
D. tunnelling

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10.1016/S0038-1098(97)00221-4

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title = "Anomalous stability of ν = 1 bilayer quantum hall state",

abstract = "We have studied the fractional and integer quantum Hall (QH) effects in a high-mobility double-layer two-dimensional electron system. We have compared the {"}stability{"} of the QH state in balanced and unbalanced double quantum wells. The behavior of the ν = 1 QH state is found to be strikingly different from all others. It is anomalously stable, though all other states decay, as the electron density is made unbalanced between the two quantum wells. We interpret the peculiar features of the vν = 1 state as consequences of the interlayer quantum coherence developed spontaneously on the basis of the composite-boson picture.",

keywords = "A. heterojunctions, A. quantum wells, D. fractional quantum Hall effect, D. quantum Hall effect, D. tunnelling",

author = "A. Sawada and Ezawa, {Z. F.} and H. Ohno and Y. Horikoshi and O. Sugie and S. Kishimoto and F. Matsukura and Y. Ohno and M. Yasumoto",

note = "Funding Information: Tohoku University.T his work was supportedb y grants from the Ministry of Education,S cience,S portsa nd Culture of Japan and from the Multi-disciplinary ScienceF oundation.",

year = "1997",

month = aug,

doi = "10.1016/S0038-1098(97)00221-4",

language = "English",

volume = "103",

pages = "447--451",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Ltd.",

number = "8",

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TY - JOUR

T1 - Anomalous stability of ν = 1 bilayer quantum hall state

AU - Sawada, A.

AU - Ezawa, Z. F.

AU - Ohno, H.

AU - Horikoshi, Y.

AU - Sugie, O.

AU - Kishimoto, S.

AU - Matsukura, F.

AU - Ohno, Y.

AU - Yasumoto, M.

N1 - Funding Information: Tohoku University.T his work was supportedb y grants from the Ministry of Education,S cience,S portsa nd Culture of Japan and from the Multi-disciplinary ScienceF oundation.

PY - 1997/8

Y1 - 1997/8

N2 - We have studied the fractional and integer quantum Hall (QH) effects in a high-mobility double-layer two-dimensional electron system. We have compared the "stability" of the QH state in balanced and unbalanced double quantum wells. The behavior of the ν = 1 QH state is found to be strikingly different from all others. It is anomalously stable, though all other states decay, as the electron density is made unbalanced between the two quantum wells. We interpret the peculiar features of the vν = 1 state as consequences of the interlayer quantum coherence developed spontaneously on the basis of the composite-boson picture.

AB - We have studied the fractional and integer quantum Hall (QH) effects in a high-mobility double-layer two-dimensional electron system. We have compared the "stability" of the QH state in balanced and unbalanced double quantum wells. The behavior of the ν = 1 QH state is found to be strikingly different from all others. It is anomalously stable, though all other states decay, as the electron density is made unbalanced between the two quantum wells. We interpret the peculiar features of the vν = 1 state as consequences of the interlayer quantum coherence developed spontaneously on the basis of the composite-boson picture.

KW - A. heterojunctions

KW - A. quantum wells

KW - D. fractional quantum Hall effect

KW - D. quantum Hall effect

KW - D. tunnelling

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U2 - 10.1016/S0038-1098(97)00221-4

DO - 10.1016/S0038-1098(97)00221-4

M3 - Article

AN - SCOPUS:0031212281

SN - 0038-1098

VL - 103

SP - 447

EP - 451

JO - Solid State Communications

JF - Solid State Communications

IS - 8

ER -

Anomalous stability of ν = 1 bilayer quantum hall state

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Keywords

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