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Tunneling at v_T = 1 in Quantum Hall Bilayers

Nandi, D. and Khaire, T. and Finck, A. D. K. and Eisenstein, J. P. and Pfeiffer, L. N. and West, K. W. (2013) Tunneling at v_T = 1 in Quantum Hall Bilayers. Physical Review B, 88 (16). Art. No. 165308. ISSN 1098-0121. doi:10.1103/PhysRevB.88.165308.

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Interlayer tunneling measurements in the strongly correlated bilayer quantized Hall phase at ν_T = 1 are reported. The maximum, or critical, current for tunneling at ν_T = 1 is shown to be a well-defined global property of the coherent phase, insensitive to extrinsic circuit effects and the precise configuration used to measure it, but also exhibiting a surprising scaling behavior with temperature. Comparisons between the experimentally observed tunneling characteristics and a recent theory are favorable at high temperatures, but not at low temperatures where the tunneling closely resembles the dc Josephson effect. The zero-bias tunneling resistance becomes extremely small at low temperatures, vastly less than that observed at zero magnetic field, but nonetheless remains finite. The temperature dependence of this tunneling resistance is similar to that of the ordinary in-plane resistivity of the quantum Hall phase.

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Additional Information:© 2013 American Physical Society. Received 28 August 2013; published 16 October 2013. It is a pleasure to thank Ron Lifshitz, Allan MacDonald, Dmytro Pesin, Johannes Pollanen, Bernd Rosenow, Ian Spielman, and Jung-Jung Su for numerous helpful interactions. The Caltech portion of this work was funded 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, and by NSF Grant No. DMR-1003080. The work at Princeton was partially funded by the Gordon and Betty Moore Foundation through Grant No. GBMF2719, and by the National Science Foundation MRSEC-DMR-0819860 at the Princeton Center for Complex Materials.
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 FoundationGBMF2719
Issue or Number:16
Classification Code:PACS: 73.43.Nq, 71.35.Lk
Record Number:CaltechAUTHORS:20130925-121324886
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Official Citation:Tunneling at νT=1 in quantum Hall bilayers D. Nandi, T. Khaire, A. D. K. Finck, J. P. Eisenstein, L. N. Pfeiffer, and K. W. West Published 16 October 2013 (11 pages) 165308
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:41528
Deposited By: Ruth Sustaita
Deposited On:25 Sep 2013 20:43
Last Modified:10 Nov 2021 04:31

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