Field independent vortex solid-to-liquid transition for B parallel to ab in oxygen deficient single crystals of YBa(2)Cu(3)O(7-delta)
2000 (English)In: Physica. C, Superconductivity, ISSN 0921-4534, Vol. 341, no Part 3, 1335-1336 p.Article in journal (Refereed) Published
Single crystals of YBa(2)Cu(3)O(7-delta) provide a suitable test system for vortex dynamics in high temperature superconductors, since the electrical anisotropy gamma = (m(c)/m(ab))(1/2) can easily be varied over a large range by changing the oxygen content. In this paper the vortex solid-to-liquid transition, as determined from a vortex-glass analysis of the resistivity, has been studied for magnetic fields 0<B<less than or equal to>12 T parallel with the ab plane of oxygen deficient single crystals of YBCO. Strikingly for high magnetic fields a field independent vortex solid-to-liquid transition is observed. A possible explanation for this phenomenon involving a crossover to a two-dimensional (2D) system is suggested.
Place, publisher, year, edition, pages
2000. Vol. 341, no Part 3, 1335-1336 p.
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:kth:diva-49982DOI: 10.1016/S0921-4534(00)00868-6ISI: 000165855700267OAI: oai:DiVA.org:kth-49982DiVA: diva2:460905