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.

Department(s)

Physics

Keywords and Phrases

Function of frequency; Higher dimensions; Metallic phase; Numerical calculation; Quantum critical; Quantum critical points; Quantum phase transitions; Renormalization group; Scaling theories; Ultra-thin; Zero temperatures; Nanowires; Quantum chemistry; Statistical mechanics; Superconducting materials; Superconductivity; Transport properties; Phase transitions

International Standard Serial Number (ISSN)

0031-9007

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2010 American Physical Society (APS), All rights reserved.

Included in

Physics Commons

Share

 
COinS