Thermal Hall conductivity and topological transition in a chiral p-wave superconductor for Sr2RuO4

Abstract

The interplay between the thermal transport property and the topological aspect is investigated in a spin-triplet chiral p-wave superconductor Sr2RuO4 with the strong two-dimensionality. We show the thermal Hall conductivity is well described by the temperature linear term and the exponential term in the low temperature region. While the former term is proportional to the so-called Chern number directly, the latter is associated with the superconducting gap amplitude of the gamma band. We also demonstrate that the coefficient of the exponential term changes the sign around Lifshitz transition. Our obtained result may enable us access easily the physical quantities and the topological property of Sr2RuO4 in detail.

6 pages, 7 figures

References in corpus (10)

• High Resolution Polar Kerr Effect Measurements of Sr2RuO4: Evidence for Broken Time Reversal Symmetry in the Superconducting State
• Hidden quasi one-dimensional superconductivity in Sr${}_2$RuO${}_4$
• Quantum Thermal Hall Effect in a Time-Reversal-Symmetry-Broken Topological Superconductor in Two Dimensions : Approach From Bulk Calculations
• Non-topological nature of the edge current in a chiral p-wave superconductor
• Current inversion at the edges of a chiral $\mathbf{p}$-wave superconductor
• Higher-Tc superconducting phase in Sr2RuO4 induced by uniaxial pressure
• Properties of edge states in spin-triplet two-band superconductor
• Determining the Surface-To-Bulk Progression in the Normal-State Electronic Structure of Sr2RuO4 by Angle-Resolved Photoemission and Density Functional Theory
• Higher-Tc Superconducting Phase in Sr2RuO4 Induced by In-Plane Uniaxial Pressure
• Effect of the RuO6 octahedron rotation at the Sr2RuO4 surface on topological property

Cited by in corpus (10)

• Chiral Superconductors
• Spontaneous surface flux pattern in chiral p-wave superconductors - revisited
• Spontaneous thermal Hall effect in three-dimensional chiral superconductors with gap nodes
• Thermal Hall Conductivity in Superconducting Phase on Kagome Lattice
• Observation of Anomalous Thermal Hall Effect in a Kagome Superconductor
• Thermal Hall conductivity in the spin-triplet superconductor with broken time-reversal symmetry
• First order superconducting phase transition in chiral $p+ip$ system
• Superconductivity in a Chern band: effect of time-reversal-symmetry breaking on superconductivity
• Drastic enhancement of the thermal Hall angle in a $d$-wave superconductor
• Signatures of topological phase transitions in the s-wave superconductor at finite temperature