New Insight into Enhanced Superconductivity in Metals near the Metal-Insulator Transition
M. S. Osofsky, R. J. Soulen, Jr., J. H. Claassen, G. Trotter, H. Kim, J. S. Horwitz
DOI 10.1103/PhysRevLett.87.197004 · 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
We have studied the transport properties of disordered WSi films near the metal/insulator transition (MIT) and we have also reviewed the data for several other disordered materials near their MIT. In all cases, we found the presence of enhanced superconductivity. We constructed a superconductivity “phase diagram” (i.e., Tc versus σ) for each system, which reveals a striking correlation: In all cases, Tc values are significantly enhanced only for samples whose conductivities lie within a narrow range on the metallic side of, and moderately near, the MIT. We present a heuristic model to explain this phenomenon.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| WSi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5 | Pressure not reported | unknown |
| WSi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5 | Pressure not reported | unknown |
| WGe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| MoGe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| MoSi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| SiAu Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Superconducting fluctuations and characteristic time scales in amorphous WSi
similarity 0.94Xiaofu Zhang et al.
Source status unknown — claims are unverified
Effect of temperature oscillations on kinetic inductance and depairing in thin and narrow superconducting nanowire resonators
similarity 0.93Jason P. Allmaras et al.
Source status unknown — claims are unverified
Saturating Intrinsic Detection Efficiency of Superconducting Nanowire Single-Photon Detectors via Defect Engineering
similarity 0.93Weijun Zhang et al.
Source status unknown — claims are unverified
Strong suppression of the resistivity near the superconducting transition in narrow microbridges in external magnetic fields
similarity 0.92Xiaofu Zhang et al.
Source status unknown — claims are unverified
Characteristics of superconducting tungsten silicide WxSi1−x for single photon detection
similarity 0.90X. Zhang et al.
Source status unknown — claims are unverified
First Sub-MeV Dark Matter Search with the QROCODILE Experiment Using Superconducting Nanowire Single-Photon Detectors
similarity 0.90Laura Baudis et al.
Source status unknown — claims are unverified