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Coherence and Disorder in Bilayer Quantum Hall Systems
Joint Authors
Source
Advances in Condensed Matter Physics
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-11-04
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
The quantum Hall bilayer at total filling factor v=1 displays a number of properties akin to superfluidity, most clearly apparent in its very low dissipation in tunneling and counterflow transport.
Theoretical descriptions in terms of quantum Hall ferromagnetism or thin-film superfluidity can be developed to explain these phenomena.
In either case, merons can be identified as important low energy excitations.
We demonstrate that a model in which puddles of merons induced by disorder, separated by narrow regions of interlayer coherence—a coherence network—can naturally explain many of the imperfect superfluid finite temperature properties that are observed in these systems.
The periodic realization of this model shows that there can be low energy excitations beyond the superfluid mode.
These are associated with transitions between states of different meron number in the puddles, where we argue that merons should be unbound at any temperature, and which can have important implications for the effect of quantum fluctuations on the system.
American Psychological Association (APA)
Fertig, H. A.& Murthy, Ganpathy. 2010. Coherence and Disorder in Bilayer Quantum Hall Systems. Advances in Condensed Matter Physics،Vol. 2011, no. 2011, pp.1-10.
https://search.emarefa.net/detail/BIM-464826
Modern Language Association (MLA)
Fertig, H. A.& Murthy, Ganpathy. Coherence and Disorder in Bilayer Quantum Hall Systems. Advances in Condensed Matter Physics No. 2011 (2011), pp.1-10.
https://search.emarefa.net/detail/BIM-464826
American Medical Association (AMA)
Fertig, H. A.& Murthy, Ganpathy. Coherence and Disorder in Bilayer Quantum Hall Systems. Advances in Condensed Matter Physics. 2010. Vol. 2011, no. 2011, pp.1-10.
https://search.emarefa.net/detail/BIM-464826
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-464826