Destruction of superconductivity in disordered materials: A dimensional crossover
O. Crauste, F. Couëdo, L. Bergé, C. A. Marrache-Kikuchi, L. Dumoulin
DOI 10.1103/PhysRevB.90.060203 · Physical Review B
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Abstract
The disorder-induced superconductor-to-insulator transition in amorphous NbxSi1−x two-dimensional thin films is studied for different niobium compositions x through a variation of the sample thickness d. We show that the critical thickness dc, separating a superconducting regime from an insulating one, increases strongly with diminishing x, thus attaining values of over 100 Å. The corresponding phase diagram in the (d,x) plane is inferred and related to the three-dimensional situation. The two-dimensional superconductor-to-insulator transition well connects with the three-dimensional superconductor-to-metal transition.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| NbxSi1-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | zero_resistance |
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Bi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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