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Muon-spin rotation measurements of the vortex state in Sr2RuO4: Type-1.5 superconductivity, vortex clustering, and a crossover from a triangular to a square vortex lattice
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2014 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 89, no 9, 094504- p.Article in journal (Refereed) Published
Abstract [en]

Muon-spin rotation has been used to probe the vortex state in Sr2RuO4. At moderate fields and temperatures a lattice of triangular symmetry is observed, crossing over to a lattice of square symmetry with increasing field and temperature. At lower fields it is found that there are large regions of the sample that are completely free from vortices which grow in volume as the temperature falls. Importantly this is accompanied by increasing vortex density and increasing disorder within the vortex-cluster-containing regions. Both effects are expected to result from the strongly temperature-dependent long-range vortex attractive forces arising from the multiband chiral-order superconductivity.

Place, publisher, year, edition, pages
2014. Vol. 89, no 9, 094504- p.
Keyword [en]
Time-Reversal Symmetry, Sr
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-143683DOI: 10.1103/PhysRevB.89.094504ISI: 000332456500003Scopus ID: 2-s2.0-84897865622OAI: oai:DiVA.org:kth-143683DiVA: diva2:708671
Funder
Swedish Research CouncilKnut and Alice Wallenberg Foundation
Note

QC 20140328

Available from: 2014-03-28 Created: 2014-03-27 Last updated: 2017-12-05Bibliographically approved

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