2017/01/30 by Yoshiki Imai, Katsunori Wakabayashi, Manfred Sigrist · 4 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Electrical resistivity and conductivity #Hall conductivity #Hall effect #Pairing #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Quasiparticle #Superconductivity #Thermal conductivity #Topological Materials and Phenomena #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.95.024516
published in Physical review. B./Physical review. B 95(2) (American Physical Society) · 8 pages, 8 figures
openalex publication_date 2017/01/30 · arxiv created 2017/02/02 · arxiv updated 2017/02/03 · openalex created_date 2017/02/10 · openalex updated_date 2026/08/06
Motivated by the spin-triplet superconductor Sr2RuO4, the thermal Hall conductivity is investigated for several pairing symmetries with broken time-reversal symmetry. In the chiral p-wave phase with a fully opened quasiparticle excitation gap, the temperature dependence of the thermal Hall conductivity has a temperature linear term associated with the topological property directly and an exponential term, which shows a drastic change around the Lifshitz transition. Examining f-wave states as alternative candidates with \mathbitd=\mathrm\ensuremathΔ0\stackrel\ifmmode \else \\fiz(kx2\ensuremath-ky2)(kx\ifmmode±\else\textpm\fiiky) and \mathrm\ensuremathΔ0\stackrel\ifmmode \else \\fizkxky(kx\ifmmode±\else\textpm\fiiky) with gapless quasiparticle excitations, we study the temperature dependence of the thermal Hall conductivity, where for the former state the thermal Hall conductivity has a quadratic dependence on temperature, originating from the linear dispersions, in addition to linear and exponential behavior. The obtained result may enable us to distinguish between the chiral p-wave and f-wave states in Sr2RuO4.