Dissemin is shutting down on January 1st, 2025

Published in

Nature Research, Scientific Reports, 1(4), 2014

DOI: 10.1038/srep06375

Links

Tools

Export citation

Search in Google Scholar

Strain-controlled thermal conductivity in ferroic twinned films

Journal article published in 2014 by Suzhi Li ORCID, Xiangdong Ding, Jie Ren, Xavier Moya, Ju Li ORCID, Jun Sun, Ekhard K. H. Salje
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

Full text: Download

Green circle
Preprint: archiving allowed
Upload
Red circle
Postprint: archiving forbidden
Green circle
Published version: archiving allowed
Upload
Policy details
Data provided by SHERPA/RoMEO

Abstract

Large reversible changes of thermal conductivity are induced by mechanical stress, and the corresponding device is a key element for phononics applications. We show that the thermal conductivity κ of ferroic twinned thin films can be reversibly controlled by strain. Nonequilibrium molecular dynamics simulations reveal that thermal conductivity decreases linearly with the number of twin boundaries perpendicular to the direction of heat flow. Our demonstration of large and reversible changes in thermal conductivity driven by strain may inspire the design of controllable thermal switches for thermal logic gates and all-solid-state cooling devices.