Nonlocal effects and shrinkage of the vortex core radius in YNi2B2C probed by muon spin rotation

K. Ohishi, K. Kakuta, J. Akimitsu, W. Higemoto, R. Kadono, J. E. Sonier, A. N. Price, R. I. Miller, R. F. Kiefl, M. Nohara, H. Suzuki, H. Takagi

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


The magnetic field distribution in the vortex state of YNi2B2C has been probed by muon spin rotation. The analysis based on the London model with nonlocal corrections shows that the vortex lattice has changed from hexagonal to square with increasing magnetic field H. At low fields the vortex core radius, ρν(H), decreases with increasing H much steeper than what is expected from the √H behavior of the Sommerfeld constant y(H), strongly suggesting that the anomaly in γ(H) primarily arises from the quasiparticle excitations outside the vortex cores.

Original languageEnglish
Article number140505
Pages (from-to)1405051-1405054
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number14
Publication statusPublished - Apr 1 2002
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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