Phonon thermal Hall effect in charge-compensated topological insulators

Abstract

From a systematic study of thermal and charge transport in various single crystals of compensated topological insulators we identify the evolution of a large low-temperature thermal Hall effect as a characteristic common feature. In order to separate phononic and electronic contributions in the measured longitudinal and transverse thermal conductivity, the electronic contributions are estimated from corresponding electrical resisivity and Hall effect measurements on the same samples by using the Wiedemann-Franz law. As may be expected for charge-compensated topological insulators the longitudinal thermal conductivity is phonon-dominated in all samples. However, we also find a pronounced field-linear thermal Hall effect that becomes most pronounced in the low-temperature range, where all samples are good electrical insulators. This indicates an underlying phononic mechanism of the thermal Hall effect and in this respect the topological insulators resemble other, mainly ionic, insulators, which have been reported to show a phonon-induced thermal Hall effect, but its underlying phononic mechanism remains to be identified. Our observation of a comparable thermal Hall ratio in topological insulators supports a theoretical scenario that explains a thermal Hall effect through skew scattering on charged impurities.

9 pages with 3 figures in the main text and additional 6 figures in the appendix

References in corpus (33)

• Topological Insulator Materials
• Majorana quantization and half-integer thermal quantum Hall effect in a Kitaev spin liquid
• Observation of the Magnon Hall Effect
• Optimizing the Bi_(2-x)Sb_(x)Te_(3-y)Se_(y) solid solutions to approach the intrinsic topological insulator regime
• The thermal Hall effect of spin excitations in a Kagome magnet
• Effect of lattice geometry on magnon Hall effect in ferromagnetic insulators
• Berry Curvature and Phonon Hall Effect
• Giant thermal Hall conductivity from neutral excitations in the pseudogap phase of cuprates
• Phonons become chiral in the pseudogap phase of cuprates
• Theory of Phonon Hall Effect in Paramagnetic Dielectrics
• Phonon thermal Hall effect in strontium titanate
• Thermal Hall Effect Induced by Magnon-Phonon Interactions
• Sn-doped Bi1.1Sb0.9Te2S, a bulk topological insulator with ideal properties
• Gigantic negative magnetoresistance in a disordered topological insulator
• Evidence of a Phonon Hall Effect in the Kitaev Spin Liquid Candidate $\alpha$-RuCl${}_3$
• Thermal Hall effect in a phonon-glass Ba${}_3$CuSb${}_2$O${}_9$
• Large Thermal Hall Effect in $\alpha$-RuCl${}_3$: Evidence for Heat Transport by Kitaev-Heisenberg Paramagnons
• Anomalous Thermal Hall Effect in an Insulating van der Waals Magnet VI3
• Thermal Hall conductivity in the cuprate Mott insulators Nd${}_2$CuO${}_4$ and Sr${}_2$CuO${}_2$Cl${}_2$
• Origin of the Phonon Hall Effect in Rare-Earth Garnets
• Revealing puddles of electrons and holes in compensated topological insulators
• Large Phonon Thermal Hall Conductivity in a Simple Antiferromagnetic Insulator
• The phonon thermal Hall angle in black phosphorus
• Charged Defects and Phonon Hall Effects in Ionic Crystals
• Resonant thermal Hall effect of phonons coupled to dynamical defects
• Phonon thermal Hall effect in a metallic spin ice
• Extrinsic phonon thermal Hall transport from Hall viscosity
• Sizeable suppression of thermal Hall effect upon isotopic substitution in strontium titanate
• Phonon drag thermal Hall effect in metallic strontium titanate
• Phonon Hall viscosity from phonon-spinon interactions
• Thermal Hall conductivity of electron-doped cuprates
• Thermal Conductivity and Theory of Inelastic Scattering of Phonons by Collective Fluctuations
• Large positive magneto-conductivity at microwave frequencies in the compensated topological insulator BiSbTeSe2

Cited by in corpus (6)

• Phonon thermal Hall effect in Mott insulators via skew-scattering by the scalar spin chirality
• Phonon thermal Hall effect in non-magnetic Y${}_2$Ti${}_2$O${}_7$
• Phonon thermal Hall as a lattice Aharonov-Bohm effect
• Angle-dependent planar thermal Hall effect by quasi-ballistic phonons in black phosphorus
• Phonon Thermal Hall Effect: The Roles of Disorder, Annealing, and Metallic Contacts
• Localized interfacial Phonon Modes at the Electronic Axion Domain Wall