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Evidence for a Finite-Temperature Phase Transition in a Bilayer Quantum Hall System

Champagne, A. R. and Eisenstein, J. P. and Pfeiffer, L. N. and West, K. W. (2008) Evidence for a Finite-Temperature Phase Transition in a Bilayer Quantum Hall System. Physical Review Letters, 100 (9). Art. No. 096801. ISSN 0031-9007. doi:10.1103/PhysRevLett.100.096801.

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We study the Josephson-like interlayer tunneling signature of the strongly correlated nuT=1 quantum Hall phase in bilayer two-dimensional electron systems as a function of the layer separation, temperature, and interlayer charge imbalance. Our results offer strong evidence that a finite temperature phase transition separates the interlayer coherent phase from incoherent phases which lack strong interlayer correlations. The transition temperature is dependent on both the layer spacing and charge imbalance between the layers.

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Additional Information:© 2008 The American Physical Society. Received 5 September 2007; published 4 March 2008. We thank S. Das Sarma, A.H. MacDonald, X.G. Wen, K. Yang, and especially G. Refael for discussions, and I.B. Spielman, G. Granger, and L.A. Tracy for technical help. This work was supported via DOE Grant No. DE-FG03-99ER45766 and NSF Grant No. DMR-0552270.
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG03-99ER45766
Issue or Number:9
Classification Code:PACS numbers: 73.43.Jn, 71.10.Pm, 71.35.Lk
Record Number:CaltechAUTHORS:CHAprl08
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9721
Deposited By: Archive Administrator
Deposited On:10 Mar 2008
Last Modified:08 Nov 2021 21:01

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