Electronic Instability at High Flux-Flow Velocities in High-Tc Superconducting Films
S. G. Doettinger, R. P. Huebener, R. Gerdemann, A. Kühle, S. Anders, T. G. Träuble, J. C. Villégier
DOI 10.1103/PhysRevLett.73.1691 · Physical Review Letters
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Abstract
At high flux-flow velocities in type-II superconductors the nonequilibrium distribution of the quasiparticles leads to an electronic instability and an abrupt switching into a state with higher electric resistivity, as predicted by Larkin and Ovchinnikov (LO). We report the first observation of this effect in a high-temperature superconductor, namely in epitaxial c-axis oriented films of YBa2Cu3O7−δ. Using the LO theory, we have extracted from our results the inelastic quasiparticle scattering rate τin, which strongly decreases with decreasing temperature below Tc.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 89 | Pressure unresolved | zero_resistance |
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