Observation of critical amplitude fluctuations near the two-dimensional superconductor-insulator transition
J. A. Chervenak, J. M. Valles, Jr.
DOI 10.1103/PhysRevB.59.11209 · Physical Review B
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 report results of transport measurements in the quantum critical regime of the disorder tuned, two-dimensional (2D) superconductor-insulator transition (SIT) in homogeneously disordered films. We show that, as the superconducting transition temperature decreases, the transition width grows, appearing to diverge at the SIT. In addition, structure develops in the dc current-voltage characteristics of films closest to the SIT indicating that the 2D superconductivity is driven into a regime of extreme inhomogeneity. The data suggest a picture of the phase transition in which large amplitude fluctuations occur as the amplitude is suppressed to near zero by disorder.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi/Sb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.06 | Pressure not reported | midpoint |
| Bi/Sb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.272 | Pressure not reported | midpoint |
| Bi/Sb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.356 | Pressure not reported | midpoint |
| PbBi/Ge Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.7 | Pressure not reported | unknown |
Similar papers
Tunneling probe of fluctuating superconductivity in disordered thin films
similarity 0.93David Dentelski et al.
Source status unknown — claims are unverified
Possible robust insulator-superconductor transition on solid inert gas and other substrates
similarity 0.93K. Das Gupta et al.
Source status unknown — claims are unverified
Magnetic-field-tuned superconductor-to-insulator transitions in amorphous Bi films with nanoscale hexagonal arrays of holes
similarity 0.92M. D. Stewart, Jr. et al.
Source status unknown — claims are unverified
Superconductor-insulator transition in a disordered electronic system
similarity 0.92Nandini Trivedi et al.
Source status unknown — claims are unverified
Spectroscopic evidence of disorder-induced quantum phase transitions in monolayer Fe(Te,Se) superconductor
similarity 0.92Guanyang He et al. · 2026 · arXiv:2603.04717
Source status unknown — claims are unverified
Superconductor-insulator transition in the absence of disorder
similarity 0.91M. C. Diamantini et al.
Source status unknown — claims are unverified