Structure of Vortex Liquid Phase in IrradiatedBi2Sr2CaCu2O8−δCrystals
| Autor: | V. K. Thorsmølle, M. P. Maley, A. E. Koshelev, L. N. Bulaevskii, W. K. Kwok, A. M. Petrean, N. Morozov |
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| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | Physical Review Letters. 82:1008-1011 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.82.1008 |
| Popis: | The $c$-axis resistivity in irradiated and in pristine $\mathrm{Bi}{}_{2}\mathrm{Sr}{}_{2}\mathrm{CaCu}{}_{2}\mathrm{O}{}_{8\ensuremath{-}\ensuremath{\delta}}$ crystals is measured as a function of the in-plane magnetic field component at fixed out-of-plane component ${B}_{\ensuremath{\perp}}$ in the vortex liquid phase at $T\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}67\mathrm{K}$. From this data we extract the dependence of the phase difference correlation length inside layers on ${B}_{\ensuremath{\perp}}$ and estimate the average length of the vortex line segments confined inside columnar defects as a function of the filling factor ${f\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}B}_{\ensuremath{\perp}}/{B}_{\ensuremath{\Phi}}$. The maximum length, about 15 interlayer distances, is reached near $f\ensuremath{\approx}0.35$. |
| Databáze: | OpenAIRE |
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