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Weber Blockade Theory of Magnetoresistance Oscillations in Superconducting Strips

Pekker, David and Refael, Gil and Goldbart, Paul M. (2011) Weber Blockade Theory of Magnetoresistance Oscillations in Superconducting Strips. Physical Review Letters, 107 (1). Art. No. 017002 . ISSN 0031-9007. doi:10.1103/PhysRevLett.107.017002.

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Recent experiments on the conductance of thin, narrow superconducting strips have found periodic fluctuations, as a function of the perpendicular magnetic field, with a period corresponding to approximately two flux quanta per strip area [A. Johansson et al., Phys. Rev. Lett. 95, 116805 (2005)]. We argue that the low-energy degrees of freedom responsible for dissipation correspond to vortex motion. Using vortex-charge duality, we show that the superconducting strip behaves as the dual of a quantum dot, with the vortices, magnetic field, and bias current respectively playing the roles of the electrons, gate voltage, and source-drain voltage. In the bias-current versus magnetic-field plane, the strip conductance displays regions of small vortex conductance (i.e., small electrical resistance) that we term “Weber blockade” diamonds, which are dual to Coulomb blockade diamonds in quantum dots.

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Additional Information:© 2011 American Physical Society. Received 22 October 2010; published 30 June 2011. We thank D. Shahar and J. Meyer for useful discussions, and the Aspen Center for Physics for its hospitality. This work was supported by DOE DE-FG02-07ER46453 (PMG), the Research Corporation, Packard and Sloan Foundation (G. R.), and the Du Bridge Foundation (D. P.).
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG02-07ER46453
Research CorporationUNSPECIFIED
Packard and Sloan FoundationUNSPECIFIED
Du Bridge FoundationUNSPECIFIED
Issue or Number:1
Classification Code:PACS: 74.78.-w, 73.21.La, 74.40.-n
Record Number:CaltechAUTHORS:20110712-110828545
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:24379
Deposited By: Tony Diaz
Deposited On:13 Jul 2011 22:48
Last Modified:09 Nov 2021 16:23

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