Onset of a Two-Dimensional Superconducting Phase in a Topological-Insulator–Normal-Metal Bi1−xSbx/Pt Junction Fabricated by Ion-Beam Techniques
Dong-Xia Qu, Nick E. Teslich, Zurong Dai, George F. Chapline, Thomas Schenkel, Sean R. Durham, Jonathan Dubois
DOI 10.1103/PhysRevLett.121.037001 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Inducing superconductivity in a topological insulator can lead to novel quantum effects. However, experimental approaches to turn a topological insulator into a superconductor are limited. Here, we report on superconductivity in topological insulator Bi0.91Sb0.09 induced via focused ion-beam deposition of a Pt thin film. The superconducting phase exhibits a Berezinski-Kosterlitz-Thouless transition, demonstrative of its two-dimensional character. From the in-plane upper critical field measurements, we estimate the superconducting thickness to be ∼17 nm for a 5.5−μm-thick sample. Our results provide evidence that the interface superconductivity could originate from the surface states of Bi0.91Sb0.09.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi0.91Sb0.09 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.89 | Pressure not reported | onset |
Similar papers
Superconductivity by alloying the topological insulator SnBi2Te4
similarity 0.91Michael A. McGuire et al.
Source status unknown — claims are unverified
Observation of two-dimensional superconductivity in bilayers of BaBiO3 and BaPbO3
similarity 0.91B. Meir et al.
Source status unknown — claims are unverified
Superconducting-insulating phase transition in pressurized Ba1−xKxBiO3
similarity 0.91Jinyu Han et al.
Source status unknown — claims are unverified
Pressure-induced superconductivity in the weak topological insulator BiSe
similarity 0.90Pallavi Malavi et al.
Source status unknown — claims are unverified
Quasi-two-dimensional superconductivity in topological nodal-line semimetal SnTaS2 nanoflakes
similarity 0.90Ankang Zhu et al.
Source status unknown — claims are unverified
Possible robust insulator-superconductor transition on solid inert gas and other substrates
similarity 0.89K. Das Gupta et al.
Source status unknown — claims are unverified