Low-Temperature Upper-Critical-Field Anomalies in Clean Superconductors
G. Kotliar, C. M. Varma
DOI 10.1103/PhysRevLett.77.2296 · Physical Review Letters
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Abstract
We interpret the upper-critical-field anomalies observed in some high-temperature superconductors as resulting from the proximity to a zero-temperature quantum critical point. We estimate the shape of the phase boundary between the normal and the superconducting phase by modeling the zero-temperature critical point as the second-order end point of the first-order melting line of the vortex lattice.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Tl2Ba2CuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Bi2Sr2CuO6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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