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  • Jellyman, E.University of Birmingham (author)

Unconventional superconductivity in the nickel chalcogenide superconductor TlNi2Se2

  • Article/chapterEnglish2020

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  • 2020

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  • LIBRIS-ID:oai:lup.lub.lu.se:5becce95-a26b-45fd-a361-c675c9f94494
  • https://lup.lub.lu.se/record/5becce95-a26b-45fd-a361-c675c9f94494URI
  • https://doi.org/10.1103/PhysRevB.101.134523DOI

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  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • We present the results of a study of the vortex lattice (VL) of the nickel chalcogenide superconductor TlNi2Se2, using small angle neutron scattering. This superconductor has the same crystal symmetry as the iron arsenide materials. Previous work points to it being a two-gap superconductor, with an unknown pairing mechanism. No structural transitions in the vortex lattice are seen in the phase diagram, arguing against d-wave gap symmetry. Empirical fits of the temperature dependence of the form factor and penetration depth rule out a simple s-wave model, supporting the presence of nodes in the gap function. The variation of the VL opening angle with field is consistent with earlier reports of multiple gaps

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  • Jefferies, P.University of Birmingham (author)
  • Pollard, S.University of Birmingham (author)
  • Forgan, E. M.University of Birmingham (author)
  • Blackburn, E.Lund University,Lunds universitet,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,University of Birmingham(Swepub:lu)el3543bl (author)
  • Campillo, E.Lund University,Lunds universitet,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)em6077ca (author)
  • Holmes, A. T.European Spallation Source ERIC, Sweden (author)
  • Cubitt, R.Institut Laue Langevin (author)
  • Gavilano, J.Paul Scherrer Institute (author)
  • Wang, HangdongZhejiang University,Hangzhou Normal University (author)
  • Du, JianhuaZhejiang University (author)
  • Fang, MinghuZhejiang University,Nanjing University (author)
  • University of BirminghamSynkrotronljusfysik (creator_code:org_t)

Related titles

  • In:Physical Review B101:132469-9950

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