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On the Planckian bound for heat diffusion in insulators

Journal Article · · Nature Physics
 [1];  [2]
  1. Stanford Univ., CA (United States)
  2. Stanford Univ., CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
In an insulator, thermal transport at high temperature is expected to be dominated by entirely classical phonon dynamics. In apparent tension with this expectation, recent experimental observations have led to the conjecture that the transport lifetime, τ, is subject to a Planckian bound from below, namely, τ ≳ τPl ≡ ℏ / (kBT). Here, we argue that this Planckian bound is due to a quantum-mechanical bound on the sound velocity: vs < vM. The ‘melting velocity’ vM is defined in terms of the melting temperature of the crystal, the interatomic spacing and Planck’s constant. We show that for several classes of insulating crystals, both simple and complex, τ / τPl ≈ vM / vs at high temperatures. The velocity bound therefore implies the Planckian bound.
Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1608310
Journal Information:
Nature Physics, Journal Name: Nature Physics Journal Issue: 5 Vol. 16; ISSN 1745-2473
Publisher:
Nature Publishing Group (NPG)Copyright Statement
Country of Publication:
United States
Language:
English

References (48)

Dynamical and elastic properties of MgSiO 3 perovskite (bridgmanite) journal March 2016
Spontaneous decay of acoustic phonons in calcium fluoride and silicon journal May 1985
Why the temperature is high journal July 2004
Theory of universal incoherent metallic transport journal December 2014
Universal T-linear resistivity and Planckian dissipation in overdoped cuprates journal November 2018
Young's Modulus, Shear Modulus, and Poisson's Ratio in Silicon and Germanium journal January 1965
Correlation of Properties of Materials to Debye and Melting Temperatures journal December 1974
Interpretation of the Thermal Conductivity of Glasses journal March 1949
Thermal conductivity of diamond between 170 and 1200 K and the isotope effect journal June 1993
Zero-Temperature-Coefficient SAW Devices on AlN Epitaxial Films journal September 1985
Thermal conductivity of polycrystalline zinc selenide journal March 2003
A lower bound to the thermal diffusivity of insulators text January 2019
Dynamical and elastic properties of MgSiO 3 perovskite (bridgmanite) journal March 2016
Thinking Like a Chemist: Intuition in Thermoelectric Materials journal April 2016
Bemerkungen zur Theorie der Metalle: Antwort auf die Kritik von E. Kretschmann journal November 1934
The finite group velocity of quantum spin systems journal September 1972
Lieb-Robinson Bounds for Harmonic and Anharmonic Lattice Systems journal September 2008
Nonmetallic crystals with high thermal conductivity journal January 1973
Lindemann law and the melting temperature of perovskites journal April 1989
The Thermal Conductivity of Nonmetallic Crystals book January 1979
Macroscopic length correlations in non-equilibrium systems and their possible realizations journal April 2020
Quantum Phase Transitions book January 2012
Resonant bonding leads to low lattice thermal conductivity journal April 2014
Thermal diffusivity of alkali and silver halide crystals as a function of temperature journal February 2011
Phonon properties and thermal conductivity from first principles, lattice dynamics, and the Boltzmann transport equation journal January 2019
Perspective on ab initio phonon thermal transport journal August 2019
Anomalous thermal diffusivity in underdoped YBa 2 Cu 3 O 6+x journal May 2017
Thermalization and possible signatures of quantum chaos in complex crystalline materials journal September 2019
An experimental test of Lindemann's melting law journal September 1977
Three-phonon phase space and lattice thermal conductivity in semiconductors journal March 2008
A lower bound to the thermal diffusivity of insulators journal July 2019
Interpretation of the Thermal Conductivity of Glasses journal March 1949
Thermal diffusivity above the Mott-Ioffe-Regel limit journal December 2019
Universal high-temperature saturation in phonon and electron transport journal March 1984
Lattice thermal conductivity: A comparison of molecular dynamics and anharmonic lattice dynamics journal October 1986
Lower limit to the thermal conductivity of disordered crystals journal September 1992
Thermal conductivity of insulating Bi 2 Sr 2 YCu 2 O 8 and superconducting Bi 2 Sr 2 CaCu 2 O 8 : Failure of the phonon-gas picture journal April 1994
Lattice thermal conductivity: Computations and theory of the high-temperature breakdown of the phonon-gas model journal December 2010
Phonon conduction in PbSe, PbTe, and PbTe 1 − x Se x from first-principles calculations journal May 2012
Self-consistent phonon calculations of lattice dynamical properties in cubic SrTiO 3 with first-principles anharmonic force constants journal August 2015
Thermal conductivity from phonon quasiparticles with subminimal mean free path in the MgSiO 3 perovskite journal September 2017
Four-phonon scattering significantly reduces intrinsic thermal conductivity of solids journal October 2017
Upper Bound on Diffusivity journal October 2017
Thermal Transport and Phonon Hydrodynamics in Strontium Titanate journal March 2018
Phonon Lifetimes throughout the Brillouin Zone at Elevated Temperatures from Experiment and Ab Initio journal December 2019
Similarity of Scattering Rates in Metals Showing T-Linear Resistivity journal February 2013
The First-Order Raman Spectra and Lattice Dynamics for YAlO 3 Crystal journal June 2003
Phonon transport in perovskite SrTiO 3 from first principles journal June 2015

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