Experimental evidence for a three-dimensional-two-dimensional crossover for magnetic fields parallel to the ab plane in oxygen-deficient single crystals of YBa2Cu3O7-delta
2000 (English)In: Physical Review B Condensed Matter, ISSN 0163-1829, E-ISSN 1095-3795, Vol. 62, no 5, 3542-3546 p.Article in journal (Refereed) Published
Resistive measurements on oxygen-deficient YBa2Cu3O7-delta single crystals of varying anisotropy gamma (22 less than or equal to gamma less than or equal to 36) have been used for investigations of the transition into a glassy vortex state for magnetic fields 0 less than or equal to B less than or equal to 12 T parallel to the ab plane. When B is accurately aligned parallel to the nb plane there is a remarkable change in behavior to a field-independent vortex solid-to-liquid transition at high magnetic fields. A possible explanation is suggested for the vertical transition involving a complete decoupling of the superconducting planes that leads to a two-dimensional system where the resistivity is given by nucleation of vortex-antivortex pairs.
Place, publisher, year, edition, pages
2000. Vol. 62, no 5, 3542-3546 p.
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:kth:diva-49984DOI: 10.1103/PhysRevB.62.3542ISI: 000088714200087OAI: oai:DiVA.org:kth-49984DiVA: diva2:460897
QC 201112012011-12-012011-12-012011-12-02Bibliographically approved