TY - JOUR
T1 - Hydrodynamic Heat Transport Regime in Bismuth
T2 - A Theoretical Viewpoint
AU - Markov, Maxime
AU - Sjakste, Jelena
AU - Barbarino, Giuliana
AU - Fugallo, Giorgia
AU - Paulatto, Lorenzo
AU - Lazzeri, Michele
AU - Mauri, Francesco
AU - Vast, Nathalie
N1 - Publisher Copyright:
© 2018 American Physical Society.
PY - 2018/2/14
Y1 - 2018/2/14
N2 - Bismuth is one of the rare materials in which second sound has been experimentally observed. Our exact calculations of thermal transport with the Boltzmann equation predict the occurrence of this Poiseuille phonon flow between ≈1.5 and ≈3.5 K, in a sample size of 3.86 and 9.06 mm, consistent with the experimental observations. Hydrodynamic heat flow characteristics are given for any temperature: heat wave propagation length, drift velocity, and Knudsen number. We discuss a gedanken experiment allowing us to assess the presence of a hydrodynamic regime in any bulk material.
AB - Bismuth is one of the rare materials in which second sound has been experimentally observed. Our exact calculations of thermal transport with the Boltzmann equation predict the occurrence of this Poiseuille phonon flow between ≈1.5 and ≈3.5 K, in a sample size of 3.86 and 9.06 mm, consistent with the experimental observations. Hydrodynamic heat flow characteristics are given for any temperature: heat wave propagation length, drift velocity, and Knudsen number. We discuss a gedanken experiment allowing us to assess the presence of a hydrodynamic regime in any bulk material.
U2 - 10.1103/PhysRevLett.120.075901
DO - 10.1103/PhysRevLett.120.075901
M3 - Article
C2 - 29542969
AN - SCOPUS:85042157160
SN - 0031-9007
VL - 120
JO - Physical Review Letters
JF - Physical Review Letters
IS - 7
M1 - 075901
ER -