Search for superconducting energy gap in UPt3 by point-contact spectroscopy

Jun Gouchi, Akihiko Sumiyama, Akira Yamaguchi, Gaku Motoyama, Noriaki Kimura, Etsuji Yamamoto, Yoshinori Haga, Yoshichika O'Nuki

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

We have investigated the differential resistance of the point contacts between heavy-fermion superconductor UPt3 and a normal metal Pt, which were fabricated using a commercial piezo-electric actuator, and retried the observation of the energy gap of UPt3. A V-shaped dip is observed in both normal and superconducting states and disappeared around TK ∼ 20 K, suggesting that it is related to the Kondo effect. Below the superconducting transition temperature, a shallow double-minimum structure, which indicates the energy gap, has been observed for the contacts on the faces perpendicular to the a-, b- and c-axes of UPt3.

Original languageEnglish
Article number012066
JournalJournal of Physics: Conference Series
Volume592
Issue number1
DOIs
Publication statusPublished - 2014 Jan 1
Event2014 International Conference on Strongly Correlated Electron Systems, SCES 2014 - Grenoble, France
Duration: 2014 Jul 72014 Jul 14

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Search for superconducting energy gap in UPt<sub>3</sub> by point-contact spectroscopy'. Together they form a unique fingerprint.

  • Cite this

    Gouchi, J., Sumiyama, A., Yamaguchi, A., Motoyama, G., Kimura, N., Yamamoto, E., Haga, Y., & O'Nuki, Y. (2014). Search for superconducting energy gap in UPt3 by point-contact spectroscopy. Journal of Physics: Conference Series, 592(1), [012066]. https://doi.org/10.1088/1742-6596/592/1/012066