Quantum melting of the vortex lattice in high-Tc superconductors
Gianni Blatter, Boris Ivlev
DOI 10.1103/PhysRevLett.70.2621 · Physical Review Letters
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Abstract
In the new high-Tc superconductors both thermal as well as quantum fluctuations are large. The latter smear the vortex cores over a distance of the order of the coherence length and thereby strongly affect the melting transition. Taking account of quantum fluctuations, the shape of the melting line is given by a universal function which is different from a simple power law in 1-T/Tc and is in excellent agreement with recent experiments on YBa2Cu3O7−δ single crystals. Above a crossover field of the order of a few tesla the resulting high-temperature phase is a quantum liquid.
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. | 92.3 | Pressure not reported | unknown |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 91.4 | Pressure not reported | unknown |
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