UPt3as a topological crystalline superconductor

Yasumasa Tsutsumi, Masaki Ishikawa, Takuto Kawakami, Takeshi Mizushima, Masatoshi Sato, Masanori Ichioka, Kazushige Machida

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

We investigate the topological aspect of the spin-triplet f-wave superconductor UPt3through 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, vortexbound 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 UPt3preserves topological crystalline superconductivity that is robust against the crystal field and spin-orbit interaction.

Original languageEnglish
Article number113707
JournalJournal of the Physical Society of Japan
Volume82
Issue number11
DOIs
Publication statusPublished - Nov 2013

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vortices
mirrors
symmetry
spin-orbit interactions
crystal field theory
valleys
superconductivity
energy
magnetic fields

Keywords

  • Edge state
  • Heavy-fermion material
  • Majorana ising anisotropy
  • Majorana zero mode
  • Topological crystalline superconductivity
  • UPt
  • Vortex state

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Tsutsumi, Y., Ishikawa, M., Kawakami, T., Mizushima, T., Sato, M., Ichioka, M., & Machida, K. (2013). UPt3as a topological crystalline superconductor. Journal of the Physical Society of Japan, 82(11), [113707]. https://doi.org/10.7566/JPSJ.82.113707

UPt3as a topological crystalline superconductor. / Tsutsumi, Yasumasa; Ishikawa, Masaki; Kawakami, Takuto; Mizushima, Takeshi; Sato, Masatoshi; Ichioka, Masanori; Machida, Kazushige.

In: Journal of the Physical Society of Japan, Vol. 82, No. 11, 113707, 11.2013.

Research output: Contribution to journalArticle

Tsutsumi, Y, Ishikawa, M, Kawakami, T, Mizushima, T, Sato, M, Ichioka, M & Machida, K 2013, 'UPt3as a topological crystalline superconductor', Journal of the Physical Society of Japan, vol. 82, no. 11, 113707. https://doi.org/10.7566/JPSJ.82.113707
Tsutsumi Y, Ishikawa M, Kawakami T, Mizushima T, Sato M, Ichioka M et al. UPt3as a topological crystalline superconductor. Journal of the Physical Society of Japan. 2013 Nov;82(11). 113707. https://doi.org/10.7566/JPSJ.82.113707
Tsutsumi, Yasumasa ; Ishikawa, Masaki ; Kawakami, Takuto ; Mizushima, Takeshi ; Sato, Masatoshi ; Ichioka, Masanori ; Machida, Kazushige. / UPt3as a topological crystalline superconductor. In: Journal of the Physical Society of Japan. 2013 ; Vol. 82, No. 11.
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