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.

monolayer

NEMS

thermal transport

Optomechanical resonator

specific heat

MoSe 2

transition metal dichalcogenide

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 3143-3150

Ämneskategorier

Energiteknik

Annan materialteknik

Den kondenserade materiens fysik

DOI

10.1021/acs.nanolett.9b00560

Mer information

Senast uppdaterat

2019-07-02