論文

査読有り
2013年11月

UPt3 as a Topological Crystalline Superconductor

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
  • Yasumasa Tsutsumi
  • ,
  • Masaki Ishikawa
  • ,
  • Takuto Kawakami
  • ,
  • Takeshi Mizushima
  • ,
  • Masatoshi Sato
  • ,
  • Masanori Ichioka
  • ,
  • Kazushige Machida

82
11
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.7566/JPSJ.82.113707
出版者・発行元
PHYSICAL SOC JAPAN

We investigate the topological aspect of the spin-triplet f-wave superconductor UPt3 through microscopic calculations of edge-and vortex-bound states based on the quasiclassical Eilenberger and Bogoliubov-de Gennes theories. It is shown that a gapless and linear dispersion exists at the edge of the ab-plane. This forms a Majorana valley, protected by the mirror chiral symmetry. We also demonstrate that, with increasing magnetic field, vortex-bound quasiparticles undergo a topological phase transition from topologically trivial states in the double-core vortex to zero-energy states in the normal-core vortex. As long as the d-vector is locked into the ab-plane, the mirror symmetry holds the Majorana property of the zero-energy states, and thus UPt3 preserves topological crystalline superconductivity that is robust against the crystal field and spin-orbit interaction.

リンク情報
DOI
https://doi.org/10.7566/JPSJ.82.113707
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000326402100002&DestApp=WOS_CPL
ID情報
  • DOI : 10.7566/JPSJ.82.113707
  • ISSN : 0031-9015
  • Web of Science ID : WOS:000326402100002

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