Quantum liquid of vortices in superconductors at T=0
Gianni Blatter, Boris Ivlev, Yuri Kagan, Martijn Theunissen, Yakov Volokitin, Peter Kes
DOI 10.1103/PhysRevB.50.13013 · Physical Review B
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Abstract
We investigate the existence of a T=0 quantum melting transition in the vortex system of a type-II superconductor. We find that homogeneous high-resistance thin films are good candidates for the observation of this effect. We calculate both the continuous dislocation-mediated melting line Bmd(T) as well as the first-order melting line BmG(T) driven by Gaussian fluctuations and present the resulting H-T phase diagram. At low temperatures the melting line BmG extrapolates to a value below the upper critical field, resulting in a quantum liquid state in the region BmG<B<Hc2.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| MoGe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2 | Pressure not reported | unknown |
| Nb3Ge Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.7 | Pressure not reported | unknown |
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