Baturina, Tatyana I. and Mironov, A. Yu. and Vinokur, V. M. and Baklanov, M. R. and Strunk, C. (2007) Localized superconductivity in the quantum-critical region of the disorder-driven superconductor-insulator transition in TiN thin films. PHYSICAL REVIEW LETTERS, 99 (25): 257003. ISSN 0031-9007, 1079-7114
Full text not available from this repository. (Request a copy)Abstract
We investigate low-temperature transport properties of thin TiN superconducting films in the vicinity of the disorder-driven superconductor-insulator transition. In a zero magnetic field, we find an extremely sharp separation between superconducting and insulating phases, evidencing a direct superconductor-insulator transition without an intermediate metallic phase. At moderate temperatures, in the insulating films we reveal thermally activated conductivity with the magnetic field-dependent activation energy. At very low temperatures, we observe a zero-conductivity state, which is destroyed at some depinning threshold voltage V-T. These findings indicate the formation of a distinct collective state of the localized Cooper pairs in the critical region at both sides of the transition.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MAGNETIC-FIELD; ULTRATHIN FILMS; MAGNETORESISTANCE; ONSET; LIMIT; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Christoph Strunk |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 25 Nov 2020 06:32 |
| Last Modified: | 25 Nov 2020 06:32 |
| URI: | https://pred.uni-regensburg.de/id/eprint/31799 |
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