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Precursors to Exciton Condensation in Quantum Hall Bilayers

Eisenstein, J. P. and Pfeiffer, L. N. and West, K. W. (2019) Precursors to Exciton Condensation in Quantum Hall Bilayers. Physical Review Letters, 123 (6). Art. No. 066802. ISSN 0031-9007. doi:10.1103/PhysRevLett.123.066802.

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Tunneling spectroscopy reveals evidence for interlayer electron-hole correlations in quantum Hall bilayer two-dimensional electron systems at layer separations near, but above, the transition to the incompressible exciton condensate at total Landau level filling ν_T = 1. These correlations are manifested by a nonlinear suppression of the Coulomb pseudogap which inhibits low energy interlayer tunneling in weakly coupled bilayers. The pseudogap suppression is strongest at ν_T = 1 and grows rapidly as the critical layer separation for exciton condensation is approached from above.

Item Type:Article
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Eisenstein, J. P.0000-0001-5460-0464
Additional Information:© 2019 American Physical Society. Received 21 March 2019; published 8 August 2019. We thank G. Chaudhary, S. Das Sarma, P. A. Lee, A. H. MacDonald, and G. Refael for helpful discussions. This work was supported in part by the Institute for Quantum Information and Matter, an NSF Physics Frontiers Center with support of the Gordon and Betty Moore Foundation through Grant No. GBMF1250. The work at Princeton University was funded by the Gordon and Betty Moore Foundation through Grant No. GBMF4420, and by the National Science Foundation MRSEC Grant No. 1420541.
Group:Institute for Quantum Information and Matter
Funding AgencyGrant Number
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
Gordon and Betty Moore FoundationGBMF1250
Gordon and Betty Moore FoundationGBMF4420
Issue or Number:6
Record Number:CaltechAUTHORS:20190513-075922050
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:95417
Deposited By: Tony Diaz
Deposited On:13 May 2019 16:32
Last Modified:10 May 2022 20:27

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