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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

Ray, S. J., Gibbs, A. S., Bending, S. J., Curran, P. J., Babaev, E., Baines, C., et al. (2014). 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. Physical Review B, 89(9): 094504, pp. 1-6. doi:10.1103/PhysRevB.89.094504.

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 Creators:
Ray, S. J.1, Author
Gibbs, A. S.1, Author
Bending, S. J.1, Author
Curran, P. J.1, Author
Babaev, E.1, Author
Baines, C.1, Author
Mackenzie, A. P.2, Author           
Lee, S. L.1, Author
Affiliations:
1external, ou_persistent22              
2Andrew Mackenzie, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863463              

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 Abstract: 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.

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 Dates: 2014-03-06
 Publication Status: Published in print
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Title: Physical Review B
  Other : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 89 (9) Sequence Number: 094504 Start / End Page: 1 - 6 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008