Optomechanical Measurement of Thermal Transport in Two-Dimensional MoSe2 Lattices
Journal article, 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

Author

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

University of Toulouse

Itai Epstein

Barcelona Institute of Science and Technology (BIST)

Andreas Isacsson

Chalmers, Physics, Condensed Matter Theory

Xavier Marie

University of Toulouse

Francesco Mauri

Sapienza University of Rome

A. Bachtold

Barcelona Institute of Science and Technology (BIST)

Nano Letters

1530-6984 (ISSN) 1530-6992 (eISSN)

Vol. 19 5 3143-3150

Subject Categories

Energy Engineering

Other Materials Engineering

Condensed Matter Physics

DOI

10.1021/acs.nanolett.9b00560

More information

Latest update

2/15/2021