Intrinsic Anomalous Thermal Hall Effect in the Unconventional Superconductor UTe2

Abstract

We investigate the intrinsic anomalous thermal Hall effect as an effective probe of the order parameters of non-unitary pairing states of the putative spin-triplet superconductor UTe${}_2$. We consider all symmetry-allowed non-unitary states under magnetic fields comprehensively, and calculate the anomalous Hall conductivity arising from time-reversal symmetry-breaking Weyl point nodes of the gap functions, assuming three types of Fermi surfaces; ellipsoid-shaped, cylinder-shaped, and ring-shaped ones, which are predicted by previous band calculations. We find the nonzero anomalous thermal Hall conductivity in the certain ratio of the two irreducible representations. The results may be utilized for future exploration of pairing states of UTe${}_2$.

References in corpus (22)

• Anyons in an exactly solved model and beyond
• Paired states of fermions in two dimensions with breaking of parity and time-reversal symmetries, and the fractional quantum Hall effect
• Spontaneously polarized half-gapped superconductivity
• Majorana Fermions and Topology in Superconductors
• Unconventional Superconductivity in Heavy Fermion UTe2
• Extreme magnetic field-boosted superconductivity
• Review of U-based Ferromagnetic Superconductors: Comparison between UGe2, URhGe, and UCoGe
• Unconventional Superconductivity in UTe2
• Field-reentrant superconductivity close to a metamagnetic transition in the heavy-fermion superconductor UTe${}_2$
• Insulator-metal transition and topological superconductivity in UTe2 from a first-principles calculation
• Cross-Correlated Responses of Topological Superconductors and Superfluids
• Point Node Gap Structure of Spin-Triplet Superconductor UTe2
• Multiple Superconducting Phases and Unusual Enhancement of the Upper Critical Field in UTe2
• Superconducting Properties of Heavy Fermion UTe${}_2$ Revealed by ${}^{125}$Te-Nuclear Magnetic Resonance
• Quasi-two-dimensional Fermi surfaces and unitary spin-triplet pairing in the heavy fermion superconductor UTe${}_2$
• Quantum Thermal Hall Effect in a Time-Reversal-Symmetry-Broken Topological Superconductor in Two Dimensions : Approach From Bulk Calculations
• Topological band and superconductivity in UTe${}_2$
• Orientation of point nodes and nonunitary triplet pairing tuned by the easy-axis magnetization in UTe2
• Electronic Structure of UTe${}_2$ Studied by Photoelectron Spectroscopy
• Spin-Orbit Coupling Induced Degeneracy in the Anisotropic Unconventional Superconductor UTe${}_2$
• Low Temperature Thermal Hall Conductivity of a Nodal Chiral Superconductor
• Impurity-Induced Anomalous Thermal Hall Effect in Chiral Superconductors

Cited by in corpus (7)

• Quasi-2D Fermi surface in the anomalous superconductor UTe2
• Triplet pairing mechanisms from Hund's-Kondo models: applications to UTe${}_2$ and CeRh${}_2$As${}_2$
• Anisotropic field-induced changes in the superconducting order parameter of UTe2
• Higher-order topological phases for time-reversal-symmetry breaking superconductivity in UTe${}_2$
• Impurity bands, line-nodes, and anomalous thermal Hall effect in Weyl superconductors
• Slow magnetic quantum oscillations in the c-axis magnetoresistance of UTe${}_2$
• Nuclear spin relaxation rate of nonunitary Dirac and Weyl superconductors