Phonon hydrodynamics in bulk insulators and semi-metals

Abstract

Decades ago, Gurzhi proposed that if momentum-conserving collisions prevail among heat-carrying phonons in insulators and charge-carrying electrons in metals, hydrodynamic features will become detectable. In this paper, we will review the experimental evidence emerging in the last few years supporting this viewpoint and raising new questions. The focus of the paper will be bulk crystals without (or with a very dilute concentration) of mobile electrons and steady-state thermal transport. We will also discuss the possible link between this field of investigation and other phenomena, such as the hybridization of phonon modes and the phonon thermal Hall effect.

A contribution to the special issue of Fizika Nizkikh Temperatur commemorating Radii Gurzhi; 10 pages, 6 figures

References in corpus (23)

• The Renaissance of Black Phosphorus
• Unified theory of thermal transport in crystals and disordered solids
• Observation of second sound in graphite at temperatures above 100 K
• Modeling heat transport in crystals and glasses from a unified lattice-dynamical approach
• Phonon hydrodynamics and ultrahigh-room-temperature thermal conductivity in thin graphite
• Scalable T^2 resistivity in a small single-component Fermi surface
• Thermal transport and phonon hydrodynamics in strontium titanate
• Phonon thermal Hall effect in strontium titanate
• Metallicity and superconductivity in doped strontium titanate
• Nernst effect in semi-metals: the meritorious heaviness of electrons
• Violation of the Wiedemann-Franz law in clean graphene layers
• Transport properties of strongly coupled electron-phonon liquids
• Electron-phonon hydrodynamics
• The phonon thermal Hall angle in black phosphorus
• Uncovering Electron-Phonon Scattering and Phonon Dynamics in Type-I Weyl Semimetals
• Thermal resistivity and hydrodynamics of the degenerate electron fluid in antimony
• On the Planckian bound for heat diffusion in insulators
• Phonon hydrodynamics in crystalline materials
• A lower bound to the thermal diffusivity of insulators
• Mesoscopic tunneling in strontium titanate
• Finding merit in dividing neighbors
• Formation of an electron-phonon bi-fluid in bulk antimony
• Coherent heat-wave generation in SrTiO${}_3$ using stimulated light-scattering

Cited by in corpus (2)

• Phonon hydrodynamic regimes in sapphire
• Phonon thermal Hall as a lattice Aharonov-Bohm effect