Diamantini, M. C. and Mironov, A. Yu. and Postolova, S. M. and Liu, X. and Hao, Z. and Silevitch, D. M. and Kopelevich, Ya. and Kim, P. and Trugenberger, C. A. and Vinokur, V. M. (2020) Bosonic topological insulator intermediate state in the superconductor-insulator transition. Physics Letters A, 384 (23). Art. No. 126570. ISSN 0375-9601. https://resolver.caltech.edu/CaltechAUTHORS:20200519-100024580
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Abstract
A low-temperature intervening metallic regime arising in the two-dimensional superconductor-insulator transition challenges our understanding of electronic fluids. Here we develop a gauge theory revealing that this emergent anomalous metal is a bosonic topological insulator where bulk transport is suppressed by mutual statistics interactions between out-of-condensate Cooper pairs and vortices and the longitudinal conductivity is mediated by symmetry-protected gapless edge modes. We explore the magnetic-field-driven superconductor-insulator transition in a niobium titanium nitride device and find marked signatures of a bosonic topological insulator behavior of the intervening regime with the saturating resistance. The observed superconductor-anomalous metal and insulator-anomalous metal dual phase transitions exhibit quantum Berezinskii-Kosterlitz-Thouless criticality in accord with the gauge theory.
| Item Type: | Article | ||||||||||||||||||
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| Additional Information: | © 2020 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Received 12 April 2020, Accepted 12 May 2020, Available online 19 May 2020. We are delighted to thank Thomas Proslier for preparing NbTiN samples used in the experiments and Tom Rosenbaum for valuable discussions. M.C.D. thanks CERN, where she completed this work, for kind hospitality. S.V.P. is grateful to Tatyana Baturina for valuable contribution at the initial stage of work on NbTiN films. The work at Argonne (V.M.V.) was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division, the work at UOC (partially V.M.V) was supported by the NSF grant DMR-1809188. The work on transport measurements at Novosibirsk (A.Yu.M. and S.V.P.) was supported by Russian Science Foundation project No. 18-72-10056. The work 5 of S.V.P. on the analysis of experimental data was supported by RFBR project No. 18-32-00718 mol-a. The work by Y.K. was supported by FAPESP, CNPq and AFOSR Grant FA9550-17-1-0132. The work at Caltech (D.S.) was supported by National Science Foundation Grant No. DMR-1606858. Data availability: The original experimental data of this article are available upon request. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. | ||||||||||||||||||
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| Subject Keywords: | Berezinskii-Kosterlitz-Thouless transition; Superconductor-insulator transition; Bose Metal; Bosonic topological insulator; Josephson junction arrays; Quantum Beresinskii-Kosterlitz-Thouless transition | ||||||||||||||||||
| Issue or Number: | 23 | ||||||||||||||||||
| Record Number: | CaltechAUTHORS:20200519-100024580 | ||||||||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20200519-100024580 | ||||||||||||||||||
| Official Citation: | M.C. Diamantini, A.Yu. Mironov, S.M. Postolova, X. Liu, Z. Hao, D.M. Silevitch, Ya. Kopelevich, P. Kim, C.A. Trugenberger, V.M. Vinokur, Bosonic topological insulator intermediate state in the superconductor-insulator transition, Physics Letters A, Volume 384, Issue 23, 2020, 126570, ISSN 0375-9601, https://doi.org/10.1016/j.physleta.2020.126570. (http://www.sciencedirect.com/science/article/pii/S0375960120304370) | ||||||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||||||
| ID Code: | 103308 | ||||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||||
| Deposited By: | Tony Diaz | ||||||||||||||||||
| Deposited On: | 19 May 2020 17:15 | ||||||||||||||||||
| Last Modified: | 21 May 2020 18:26 |
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