Anomalous temperature dependence of vortex elastic properties in the flux-flow regime of Mo77Ge23/Ge multilayer superconductors
W. R. White, A. Kapitulnik, M. R. Beasley
DOI 10.1103/PhysRevB.50.6303 · 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 nonlinear electrical response in superconducting/insulating Mo77Ge23/Ge multilayers. In low-anisotropy multilayers, we observe an abrupt change in the current-voltage characteristic as a function of temperature. This change corresponds to a sharp drop in the pinning drag force acting on moving vortices in the flux-flow regime at low temperatures. The decrease in pinning drag force may be related to an abrupt increase in the rigidity of the system of moving vortices.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Mo77Ge23 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5.39 | Pressure not reported | onset |
Similar papers
Thermally assisted vortex motion in coupled two-dimensional superconductors
similarity 0.97W. R. White et al.
Source status unknown — claims are unverified
Collective vortex motion in a-MoGe superconducting thin films
similarity 0.94W. R. White et al.
Source status unknown — claims are unverified
Effect of Thermal Phase Fluctuations on the Superfluid Density of Two-Dimensional Superconducting Films
similarity 0.94Stefan J. Turneaure et al.
Source status unknown — claims are unverified
Model system for vortex motion in coupled two-dimensional type-II superconductors
similarity 0.92W. R. White et al.
Source status unknown — claims are unverified
Hysteretic magnetic pinning and reversible resistance switching in high-temperature superconductor/ferromagnet multilayers
similarity 0.88C. Visani et al.
Source status unknown — claims are unverified
Observation of a new universal resistive behavior of two-dimensional superconductors in a magnetic field
similarity 0.88J. M. Graybeal & M. R. Beasley
Source status unknown — claims are unverified