Field dependence of the superconducting basal plane anisotropy of TmNi2B2C

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Without internal affiliation

  • Author: Das, P.

    Department of Physics, University of Notre Dame, United States

  • Author: Densmore, J. M.

    U. S. Army Research Laboratory, United States

  • Author: Rastovski, C.

    Department of Physics, University of Notre Dame, United States

  • Author: Schlesinger, K. J.

    Department of Physics, University of Notre Dame, United States

  • Author: Laver, Mark

    Unknown

  • Author: Dewhurst, C. D.

    Institut Laue-Langevin, France

  • Author: Littrell, K.

    Oak Ridge National Laboratory, United States

  • Author: Bud'ko, S. L.

    Iowa State University, United States

  • Author: Canfield, P. C.

    Iowa State University, United States

  • Author: Eskildsen, M. R.

    Department of Physics, University of Notre Dame, United States

View graph of relations

The superconductor TmNi2B2C possesses a significant fourfold basal plane anisotropy, leading to a square vortex lattice (VL) at intermediate fields. However, unlike other members of the borocarbide superconductors, the anisotropy in TmNi2B2C appears to decrease with increasing field, evident by a reentrance of the square VL phase. We have used small-angle neutron scattering measurements of the VL to study the field dependence of the anisotropy. Our results provide a direct, quantitative measurement of the decreasing anisotropy. We attribute this reduction of the basal plane anisotropy to the strong Pauli paramagnetic effects observed in TmNi2B2C and the resulting expansion of vortex cores near H-c2.
Original languageEnglish
JournalPhysical Review B (Condensed Matter and Materials Physics)
Publication date2012
Volume86
Issue14
Pages144501
Number of pages7
ISSN1098-0121
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 0
Download as:
Download as PDF
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
PDF
Download as HTML
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
HTML
Download as Word
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
Word

ID: 12639214