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- Holme, Petter (author)
Phase transitions in the two-dimensional random gauge XY model
- Article/chapterEnglish2003
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- 2003
- printrdacarrier
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- LIBRIS-ID:oai:DiVA.org:kth-22397
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-22397URI
- https://doi.org/10.1103/PhysRevB.67.104510DOI
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- Language:English
- Summary in:English
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- QC 20100525
- The two-dimensional random gauge XY model, where the quenched random variables are magnetic bond angles uniformly distributed within [(-)rpi,rpi](0less than or equal torless than or equal to1), is studied via Monte Carlo simulations. We investigate the phase diagram in the plane of the temperature T and the disorder strength r and infer, in contrast to a prevailing conclusion in many earlier studies, that the system is superconducting at any disorder strength r for sufficiently low T. It is also argued that the superconducting to normal transition has different nature at weak disorder and strong disorder: termed Kosterlitz-Thouless (KT) type and non-KT type, respectively. The results are compared to earlier works.
Subject headings and genre
- vortex-glass transition
- monte-carlo
- random-superconductor
- spin-glass
- temperature
- disorder
- order
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- Kim, Beom Jun (author)
- Minnhagen, P. (author)
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- In:Physical Review B. Condensed Matter and Materials Physics67:101098-01211550-235X
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