Possible Realization of Topological Crystalline Superconductivity with Time-Reversal Symmetry in UTe2

Abstract

The recent measurement of the de Haas-van Alphen effect in the spin-triplet superconductor UTe2 [D. Aoki et al., J. Phys. Soc. Jpn. 91, 083704 (2022)] supports cylindrical electron and hole Fermi surfaces, which implies that UTe2 is trivial as a 3D time-reversal-invariant topological superconductor. Inspired by this observation, we investigate the possible realization of a topological crystalline superconductor protected by the crystalline symmetry of UTe2. We examine Majorana surface states protected by mirror and two-fold rotational symmetries for all symmetry-allowed odd-parity pairing states with time-reversal symmetry and clarify the corresponding topological invariants. It is found that topological crystalline superconductivity can be realized for all irreducible representations of odd-parity pairing states of UTe2 even for cylindrical Fermi surfaces.

12 pages, 7 figures

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Cited by in corpus (13)

• Enhanced triplet superconductivity in next generation ultraclean UTe2
• Pairing symmetries of multiple superconducting phases in UTe2: Competition between ferromagnetic and antiferromagnetic fluctuations
• Odd-Parity Quasiparticle Interference in the Superconductive Surface State of UTe2
• Thermodynamic transitions and topology of spin-triplet superconductivity: Application to UTe${}_2$
• Anisotropic paramagnetic response of topological Majorana surface states in the superconductor ${\text{UTe}}_2$
• Nodal superconducting gap structure and topological surface states of UTe${}_2$
• Quasiparticle interference and spectral function of the UTe${}_2$ superconductive surface band
• Majorana multipole response with magnetic point group symmetry
• Reciprocal and nonreciprocal paraconductivity in bilayer multiphase superconductors
• Two-dimensional flat band on the (011) surface of UTe${}_2$: Implication for STM measurements with a superconducting tip
• Higher-order topological phases for time-reversal-symmetry breaking superconductivity in UTe${}_2$
• Theoretical Study of Impurity Effects on Superconductivity in UTe2
• Quasiparticle Interference of Spin-Triplet Superconductors: Application to UTe${}_2$