Flux motion and phase transitions in superconducting (K,Ba)BiO3 single crystals
T. Klein, L. Baril, C. Escribe-Filippini, J. Marcus, A. G. M. Jansen
DOI 10.1103/PhysRevB.53.9337 · Physical Review B
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Abstract
We present magnetoresistance measurements up to 20 T performed on superconducting (K,Ba)BiO3 single crystals (Tc∼31 K). The foot of the transition curves can be fitted to ρ∼[HHg(T)−1]4.1 and the E−J curves exhibit a power law behavior at the melting temperature (E∼J3.2). This shows that a vortex glass transition exists in this three-dimensional superconductor. The fluctuations of the conductivity in the vicinity of the mean field transition are discussed through the scaling procedure developed by Ullah and Dorsey. An H−T phase diagram has been deduced from the data.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| KxBa1-xBiO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 31 | Pressure not reported | unknown |
| KxBa1-xBiO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 31 | Pressure not reported | unknown |
| K0.35Ba0.65BiO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 31 | Pressure not reported | unknown |
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