Optomechanical Measurement of Thermal Transport in Two-Dimensional MoSe2 Lattices
Artikel i vetenskaplig tidskrift, 2019
Nanomechanical resonators have emerged as sensors with exceptional sensitivities. These sensing capabilities open new possibilities in the studies of the thermodynamic properties in condensed matter. Here, we use mechanical sensing as a novel approach to measure the thermal properties of low-dimensional materials. We measure the temperature dependence of both the thermal conductivity and the specific heat capacity of a transition metal dichalcogenide monolayer down to cryogenic temperature, something that has not been achieved thus far with a single nanoscale object. These measurements show how heat is transported by phonons in two-dimensional systems. Both the thermal conductivity and the specific heat capacity measurements are consistent with predictions based on first-principles.
transition metal dichalcogenide
Optomechanical resonator
NEMS
monolayer
MoSe 2
specific heat
thermal transport
Författare
Nicolas Morell
Barcelona Institute of Science and Technology (BIST)
Slaven Tepsic
Barcelona Institute of Science and Technology (BIST)
Antoine Reserbat-Plantey
Barcelona Institute of Science and Technology (BIST)
Andrea Cepellotti
Lawrence Berkeley National Laboratory
University of California
Marco Manca
Université de Toulouse
Itai Epstein
Barcelona Institute of Science and Technology (BIST)
Andreas Isacsson
Chalmers, Fysik, Kondenserade materiens teori
Xavier Marie
Université de Toulouse
Francesco Mauri
Sapienza, Università di Roma
A. Bachtold
Barcelona Institute of Science and Technology (BIST)
Nano Letters
1530-6984 (ISSN) 1530-6992 (eISSN)
Vol. 19 5 3143-3150Ämneskategorier
Energiteknik
Annan materialteknik
Den kondenserade materiens fysik
DOI
10.1021/acs.nanolett.9b00560