Enhancement of Bose-Glass Superconductivity in YBa2Cu3O7−δ Thin Films
G. Nakielski, A. Rickertsen, T. Steinborn, J. Wiesner, G. Wirth, A. G. M. Jansen, J. Kötzler
DOI 10.1103/PhysRevLett.76.2567 · Physical Review Letters
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Abstract
Dynamic scaling analyses of the ac conductivity measured between 1 and 190 kOe before and after heavy ion irradiation parallel to the c axis reveal continuous phase transitions to superconducting glassy vortex states. A first unambiguous evidence for the predicted Bose-glass (BG) behavior being stable up to the matching field Hφ=40kOe is presented. The critical exponents differ significantly from those obtained for H⊥c and those reported recently for twin-free crystals, suggesting that the inherent uncorrelated disorder in thin films reduces the vortex line wandering, and therefore enhances the BG transition.
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. | 84.7 | Pressure not reported | unknown |
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