A vortex solid-to-liquid transition with fully anisotropic scaling
2009 (English)In: Journal of Physics, Conference Series, ISSN 1742-6588, E-ISSN 1742-6596, Vol. 150, no 5Article in journal (Refereed) Published
The vortex solid-to-liquid transition has been studied in heavy ion irradiated untwinned single crystals of YBa2Cu3O7-delta with an inclined applied magnetic field. For magnetic fields tilted at angles about 45 degrees away from the columnar defects, we find that the electric resistivity in the vortex liquid regime approaches zero with power laws in the reduced temperature T - T-c that have different exponents in all three spatial directions. Since the symmetry in the problem has been broken in two non-collinear directions by i) the direction of the columnar defects and ii) the direction of the applied magnetic field, our findings give evidence for a new type of critical behavior with fully anisotropic critical exponents. A possible view of the vortex topology for the transition is also suggested.
Place, publisher, year, edition, pages
2009. Vol. 150, no 5
Other Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-33481DOI: 10.1088/1742-6596/150/5/052007ISI: 000289688600007ScopusID: 2-s2.0-77952493230OAI: oai:DiVA.org:kth-33481DiVA: diva2:415821
QC 201507302011-05-092011-05-092015-07-30Bibliographically approved