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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Dynamical Conductivity at the Dirty Superconductor-Metal Quantum Phase Transition

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Del Maestro, Adrian [1] ; Rosenow, Bernd [2] ; Hoyos, Jose A. [3] ; Vojta, Thomas [4]
Total Authors: 4
[1] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1 - Canada
[2] Univ Leipzig, Inst Theoret Phys, D-04103 Leipzig - Germany
[3] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Paulo - Brazil
[4] Missouri Univ Sci & Technol, Dept Phys, Rolla, MO 65409 - USA
Total Affiliations: 4
Document type: Journal article
Source: Physical Review Letters; v. 105, n. 14 OCT 1 2010.
Web of Science Citations: 12

We study the transport properties of ultrathin disordered nanowires in the neighborhood of the superconductor-metal quantum phase transition. To this end we combine numerical calculations with analytical strong-disorder renormalization group results. The quantum critical conductivity at zero temperature diverges logarithmically as a function of frequency. In the metallic phase, it obeys activated scaling associated with an infinite-randomness quantum critical point. We extend the scaling theory to higher dimensions and discuss implications for experiments. (AU)

FAPESP's process: 10/03749-4 - Quantum phase transitions: effects of disorder and dissipation
Grantee:José Abel Hoyos Neto
Support type: Regular Research Grants