Bilayer 2D electron systems at νtot = 1: Phase boundary between weak and strong coupling

J. P. Eisenstein; M. Kellogg; I. B. Spielman; L. N. Pfeiffer; K. W. West

doi:10.1016/j.physe.2003.09.027

Bilayer 2D electron systems at ν_tot = 1: Phase boundary between weak and strong coupling

J. P. Eisenstein, M. Kellogg, I. B. Spielman, L. N. Pfeiffer, K. W. West

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

2 Scopus citations

Abstract

The collapse of the excitonic quantized Hall state at ν_tot = 1 in double layer two-dimensional electron systems is studied via interlayer tunneling and Coulomb drag. We find that spontaneous interlayer phase coherence, perhaps the most important hallmark of the excitonic phase and directly detected via a strong resonant enhancement of the zero-bias tunneling conductance, collapses very rapidly above a critical layer separation. In contrast, a related anomaly in the longitudinal component of Coulomb drag at ν_tot = 1 subsides much more slowly as the layer separation is increased beyond the critical point.

Original language	English (US)
Pages (from-to)	111-116
Number of pages	6
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	20
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physe.2003.09.027
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

Bilayer 2D system
Excitonic superfluid
Quantized Hall effect

Access to Document

10.1016/j.physe.2003.09.027

Cite this

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title = "Bilayer 2D electron systems at νtot = 1: Phase boundary between weak and strong coupling",

abstract = "The collapse of the excitonic quantized Hall state at νtot = 1 in double layer two-dimensional electron systems is studied via interlayer tunneling and Coulomb drag. We find that spontaneous interlayer phase coherence, perhaps the most important hallmark of the excitonic phase and directly detected via a strong resonant enhancement of the zero-bias tunneling conductance, collapses very rapidly above a critical layer separation. In contrast, a related anomaly in the longitudinal component of Coulomb drag at νtot = 1 subsides much more slowly as the layer separation is increased beyond the critical point.",

keywords = "Bilayer 2D system, Excitonic superfluid, Quantized Hall effect",

author = "Eisenstein, {J. P.} and M. Kellogg and Spielman, {I. B.} and Pfeiffer, {L. N.} and West, {K. W.}",

year = "2003",

month = dec,

doi = "10.1016/j.physe.2003.09.027",

language = "English (US)",

volume = "20",

pages = "111--116",

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",

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T1 - Bilayer 2D electron systems at νtot = 1

T2 - Proceedings of the International Symposium at Quantum Hall Effect

AU - Eisenstein, J. P.

AU - Kellogg, M.

AU - Spielman, I. B.

AU - Pfeiffer, L. N.

AU - West, K. W.

PY - 2003/12

Y1 - 2003/12

N2 - The collapse of the excitonic quantized Hall state at νtot = 1 in double layer two-dimensional electron systems is studied via interlayer tunneling and Coulomb drag. We find that spontaneous interlayer phase coherence, perhaps the most important hallmark of the excitonic phase and directly detected via a strong resonant enhancement of the zero-bias tunneling conductance, collapses very rapidly above a critical layer separation. In contrast, a related anomaly in the longitudinal component of Coulomb drag at νtot = 1 subsides much more slowly as the layer separation is increased beyond the critical point.

AB - The collapse of the excitonic quantized Hall state at νtot = 1 in double layer two-dimensional electron systems is studied via interlayer tunneling and Coulomb drag. We find that spontaneous interlayer phase coherence, perhaps the most important hallmark of the excitonic phase and directly detected via a strong resonant enhancement of the zero-bias tunneling conductance, collapses very rapidly above a critical layer separation. In contrast, a related anomaly in the longitudinal component of Coulomb drag at νtot = 1 subsides much more slowly as the layer separation is increased beyond the critical point.

KW - Bilayer 2D system

KW - Excitonic superfluid

KW - Quantized Hall effect

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DO - 10.1016/j.physe.2003.09.027

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SP - 111

EP - 116

JO - Physica E: Low-Dimensional Systems and Nanostructures

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