TY - JOUR
T1 - UPt3as a topological crystalline superconductor
AU - Tsutsumi, Yasumasa
AU - Ishikawa, Masaki
AU - Kawakami, Takuto
AU - Mizushima, Takeshi
AU - Sato, Masatoshi
AU - Ichioka, Masanori
AU - Machida, Kazushige
PY - 2013/11
Y1 - 2013/11
N2 - 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.
AB - 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.
KW - Edge state
KW - Heavy-fermion material
KW - Majorana ising anisotropy
KW - Majorana zero mode
KW - Topological crystalline superconductivity
KW - UPt
KW - Vortex state
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UR - http://www.scopus.com/inward/citedby.url?scp=84887122835&partnerID=8YFLogxK
U2 - 10.7566/JPSJ.82.113707
DO - 10.7566/JPSJ.82.113707
M3 - Article
AN - SCOPUS:84887122835
VL - 82
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 11
M1 - 113707
ER -