Anomalous thermal Hall effect and anomalous Nernst effect of CsV${}_3$Sb${}_5$

Abstract

Motived by time-reversal symmetry breaking and giant anomalous Hall effect in kagome superconductor \textit{A}V${}_3$Sb${}_5$ (\textit{A} = Cs, K, Rb), we carried out the thermal transport measurements on CsV${}_3$Sb${}_5$. In addition to the anomalous Hall effect, the anomalous Nernst effect and the anomalous thermal Hall effect emerge. Interestingly, the longitudinal thermal conductivity ${\kappa }_{xx}$ largely deviates from the electronic contribution obtained from the longitudinal conductivity ${\sigma }_{xx}$ by the Wiedemann-Franz law. In contrast, the thermal Hall conductivity ${\kappa }_{xy}$ is roughly consistent with the Wiedemann-Franz law from electronic contribution. All these results indicate the large phonon contribution in the longitudinal thermal conductivity. Moreover, the thermal Hall conductivity is also slightly greater than the theoretical electronic contribution, indicating other charge neutral contributions. More than that, the Nernst coefficient and Hall resistivity show the multi-band behavior with possible additional contribution from Berry curvature at the low fields.

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• The structure of kagome superconductors CsV${}_3$Sb${}_5$ in the charge density wave states
• Electrical and thermal transport properties of kagome metals $A$Ti${}_3$Bi${}_5$ ($A$ = Rb, Cs)
• Multiband effects in thermoelectric and electrical transport properties of kagome superconductors $A$V${}_3$Sb${}_5$ ($A$ = K, Rb, Cs)
• Kagome metals
• Glass-like Cross-plane Thermal Conductivity of Kagome Metals RbV3Sb5 and CsV3Sb5
• Electronic band structures of topological kagome materials
• Two elementary band representation model, Fermi surface nesting, and surface topological superconductivity in $A$V${}_3$Sb${}_5$ ($A=\text{K, Rb, Cs}$)
• Impact of the orbital current order on the superconducting properties of the kagome superconductors
• Origin of anomalous magnetotransport in kagome superconductors AV${}_3$Sb${}_5$ (A=K,Rb,Cs)
• Kagome materials $A$V${}_3$Sb${}_5$ ($A$=K,Rb,Cs): pairing symmetry and pressure-tuning studies
• Interplay between Chiral Charge Density Wave and Superconductivity in Kagome Superconductors: A Self-consistent Theoretical Analysis
• Intrinsic and extrinsic anomalous transport properties of Heusler ferromagnets Fe${}_2$CoAl and Fe${}_2$NiAl from first principles
• Electrical and thermal transport properties of kagome metals AV${}_3$Sb${}_5$ (A=K, Rb, Cs)
• Anomalous Magnetotransport in the Paramagnetic State of a Magnetic Kagome Metal EuTi${}_3$Bi${}_4$
• Large Oscillatory Thermal Hall Effect in Kagome Metals
• Topological Superconducting States and Quasiparticle Transport on Kagome Lattice
• Primitive to conventional geometry projection for efficient phonon transport calculations
• Impact of Charge Density Waves on Superconductivity and Topological Properties in AV${}_3$Sb${}_5$ Kagome Superconductors
• Anomalous Nernst Effect and Its Implications for Time-Reversal Symmetry Breaking in Kagome Metal ScV6Sn6
• Current-induced magnetoresistance hysteresis in the kagome superconductor CsV${}_3$Sb${}_5$
• Electron-electron and electron-phonon collision cross sections in CsV3Sb5
• Effective Ionic Valence and Local Magnetic Moment in Kagome Superconductors