Searching for the in-plane anisotropy of the specific heat of UPt 3 in rotating fields

S. Kittaka, K. An, T. Sakakibara, Y. Haga, E. Yamamoto, N. Kimura, Y. Onuki, K. Machida

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)


In order to identify the gap structure of a spin-triplet superconductor UPt3, we performed field-angle-resolved specific heat (Cφ) measurements in a magnetic field rotated around the [0001] axis. Although various theories predict fourfold symmetry of the gap in the superconducting C phase, we observed no angular variation in Cφ in a temperature range down to 88 mK (∼ 0.17Tc). This absence of the variation in Cφ implies that the field-angle-dependent quasiparticle excitations, reflecting the gap anisotropy, are averaged out in the bulk of UPt3.

Original languageEnglish
Article number012031
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2012
EventInternational Conference on Strongly Correlated Electron Systems, SCES 2011 - Cambridge, United Kingdom
Duration: 2011 Aug 292011 Sep 3

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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