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Ovadia M, Kalok D, Tamir I, et al. Evidence for a Finite-Temperature Insulator. Sci Rep. 2015;5:13503doi: 10.1038/srep13503.
Ovadia, M., Kalok, D., Tamir, I., Mitra, S., Sacépé, B., & Shahar, D. (2015). Evidence for a Finite-Temperature Insulator. Scientific reports, 513503. https://doi.org/10.1038/srep13503
Ovadia, M, et al. "Evidence for a Finite-Temperature Insulator." Scientific reports vol. 5 (2015): 13503. doi: https://doi.org/10.1038/srep13503
Ovadia M, Kalok D, Tamir I, Mitra S, Sacépé B, Shahar D. Evidence for a Finite-Temperature Insulator. Sci Rep. 2015 Aug 27;5:13503. doi: 10.1038/srep13503. PMID: 26310437; PMCID: PMC4550897.
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Sci Rep. 2015 Aug 27;5:13503. doi: 10.1038/srep13503.

Evidence for a Finite-Temperature Insulator.

Scientific reports

M Ovadia, D Kalok, I Tamir, S Mitra, B Sacépé, D Shahar

Affiliations

  1. Department of Condensed Matter Physics, The Weizmann Institute of Science, Rehovot 76100, Israel.
  2. Univ. Grenoble Alpes, Institut NEEL, F-38042 Grenoble, France.
  3. CNRS, Institut NEEL, F-38042 Grenoble, France.

PMID: 26310437 PMCID: PMC4550897 DOI: 10.1038/srep13503

Abstract

In superconductors the zero-resistance current-flow is protected from dissipation at finite temperatures (T) by virtue of the short-circuit condition maintained by the electrons that remain in the condensed state. The recently suggested finite-T insulator and the "superinsulating" phase are different because any residual mechanism of conduction will eventually become dominant as the finite-T insulator sets-in. If the residual conduction is small it may be possible to observe the transition to these intriguing states. We show that the conductivity of the high magnetic-field insulator terminating superconductivity in amorphous indium-oxide exhibits an abrupt drop, and seem to approach a zero conductance at T < 0.04 K. We discuss our results in the light of theories that lead to a finite-T insulator.

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