Abstract
We present an experimental study of bilayers of a disordered Ag metal layer close to the metal-insulator transition and an indium-oxide film which is on the insulating side of the superconductor insulator transition. Our results show that superconducting fluctuations within the indium-oxide film, that proximitize the underlying metal layer, induce insulating rather than superconducting behavior. This is ascribed to suppression of density of states (due to the superconducting energy gap) for quasiparticles in the proximitized regions. Our results present a manifestation of the proximity effect phenomenon and provide important insight into the nature of the insulating phase of the disorder driven superconductor insulator transition.
| Original language | English |
|---|---|
| Article number | 014505 |
| Number of pages | 6 |
| Journal | Physical Review B |
| Volume | 108 |
| Issue number | 1 |
| DOIs | |
| State | Published - 1 Jul 2023 |
Bibliographical note
Publisher Copyright:© 2023 American Physical Society.
Funding
We are grateful for technical help from I. Volotsenko, R. Cohen, Y. Stein, A. Fried, A. Roy, and M. Laav and useful discussions with J. Ruhman, N. Trivedi, and T. Baturina. This work was supported by the US-Israel Bi-national Science Foundation (BSF) Grant No. 2020331.
| Funders | Funder number |
|---|---|
| US-Israel bi-national Science Foundation | |
| United States-Israel Binational Science Foundation | 2020331 |