Work

Dynamical Conductivity at the Dirty Superconductor-Metal Quantum Phase Transition

Year: 2010

Type: article

Abstract: 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.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.105.145702

Authors: Adrian Del Maestro, Bernd Rosenow, José A. Hoyos, Thomas Vojta

Institutions: University of British Columbia, Leipzig University, Universidade de São Paulo, Instituto de Física de São Carlos, Missouri University of Science and Technology

Language: English

Topic: Physics of Superconductivity and Magnetism

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green