Kronfeldner, K. and Baturina, T. and Strunk, Christoph (2021) Multiple crossing points and possible quantum criticality in the magnetoresistance of thin TiN films. PHYSICAL REVIEW B, 103 (18): 184512. ISSN 2469-9950, 2469-9969
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We have measured R(T, B) of a TiN thin film very close to the disorder-driven superconductor-insulator transition but still superconducting at zero field and low temperatures. In a magnetic field we find that three distinct crossing points of the magnetoresistance isotherms occur at magnetic fields B-cX in three different temperature regions. Each crossing point in R(T, B) corresponds to a plateau in R(T, B-cX). We systematically study the evolution of these crossing points near the disorder-induced superconductor/insulator transition, identify the most promising candidate for a quantum phase transition, and provide estimates for the two critical exponents z and nu.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SUPERCONDUCTOR-INSULATOR TRANSITION; MAGNETIC-FIELD; PHASE-TRANSITIONS; DUALITY; DISORDER |
| 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: | 10 Aug 2022 07:44 |
| Last Modified: | 10 Aug 2022 07:44 |
| URI: | https://pred.uni-regensburg.de/id/eprint/46264 |
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