Schneider, I and Kronfeldner, K. and Baturina, T. and Strunk, C. (2019) Quantum phase slips and number-phase duality in disordered TiN nanostrips. PHYSICAL REVIEW B, 99 (9): 094522. ISSN 2469-9950, 2469-9969
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We have measured the electric transport properties of TiN nanostrips with different widths. At zero magnetic field, the temperature-dependent resistance R(T) saturates at a finite resistance toward low temperatures, which results from quantum phase slips in the narrower strips. We find that the current-voltage (I-V) characteristics of the narrowest strips are equivalent to those of small Josephson junctions. Applying a transverse magnetic field drives the devices into a reentrant insulating phase, with I-V characteristics dual to those in the superconducting regime. The results provide evidence that our critically disordered superconducting nanostrips behave like small self-organized random Josephson networks.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SUPERCONDUCTING NANOWIRES; JOSEPHSON; FLUCTUATIONS; TRANSITION; OSCILLATIONS; SCALE; DC; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Christoph Strunk |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 15 Apr 2020 10:25 |
| Last Modified: | 15 Apr 2020 10:25 |
| URI: | https://pred.uni-regensburg.de/id/eprint/27328 |
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