Bosonic topological insulator intermediate state in the superconductor-insulator transition

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

doi:10.1016/j.physleta.2020.126570

Bosonic topological insulator intermediate state in the superconductor-insulator transition

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

Nano-Superconduction Laboratory

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

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.

Original language	English
Article number	126570
Number of pages	9
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	384
Issue number	23
DOIs	https://doi.org/10.1016/j.physleta.2020.126570
Publication status	Published - 17 Aug 2020

Keywords

Berezinskii-Kosterlitz-Thouless transition
Bose metal
Bosonic topological insulator
Josephson junction arrays
Quantum Berezinskii-Kosterlitz-Thouless transition
Superconductor-insulator transition
SUPERINSULATOR
PHASE-TRANSITIONS
METAL
ATOMIC LAYER DEPOSITION
CHARGE
ONSET

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Diamantini, M. C., Mironov, A. Y., Postolova, S. M., Liu, X., Hao, Z., Silevitch, D. M., Kopelevich, Y., Kim, P., Trugenberger, C. A., & Vinokur, V. M. (2020). Bosonic topological insulator intermediate state in the superconductor-insulator transition. Physics Letters, Section A: General, Atomic and Solid State Physics, 384(23), [126570]. https://doi.org/10.1016/j.physleta.2020.126570

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Diamantini, MC, Mironov, AY, Postolova, SM, Liu, X, Hao, Z, Silevitch, DM, Kopelevich, Y, Kim, P, Trugenberger, CA & Vinokur, VM 2020, 'Bosonic topological insulator intermediate state in the superconductor-insulator transition', Physics Letters, Section A: General, Atomic and Solid State Physics, vol. 384, no. 23, 126570. https://doi.org/10.1016/j.physleta.2020.126570

Bosonic topological insulator intermediate state in the superconductor-insulator transition. / Diamantini, M. C.; Mironov, A. Yu; Postolova, S. M.; Liu, X.; Hao, Z.; Silevitch, D. M.; Kopelevich, Ya; Kim, P.; Trugenberger, C. A.; Vinokur, V. M.

In: Physics Letters, Section A: General, Atomic and Solid State Physics, Vol. 384, No. 23, 126570, 17.08.2020.

Research output: Contribution to journal › Article › peer-review

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