Anomalously low electronic thermal conductivity in metallic vanadium dioxide-Reference-Cited by-同舟云学术

Anomalously low electronic thermal conductivity in metallic vanadium dioxide

Published:2017-01-27 Issue:6323 Volume:355 Page:371-374
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Lee Sangwook¹²,Hippalgaonkar Kedar³⁴,Yang Fan³⁵,Hong Jiawang⁶⁷,Ko Changhyun¹,Suh Joonki¹,Liu Kai¹⁸,Wang Kevin¹,Urban Jeffrey J.⁵,Zhang Xiang³⁸⁹,Dames Chris³⁸,Hartnoll Sean A.¹⁰,Delaire Olivier⁷¹¹,Wu Junqiao¹⁸

Affiliation:

1. Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA.

2. School of Materials Science and Engineering, Kyungpook National University, Daegu 41566, South Korea.

3. Department of Mechanical Engineering, University of California, Berkeley, CA 94720, USA.

4. Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, 08-03, 138634 Singapore.

5. The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.

6. School of Aerospace Engineering and Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China.

7. Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.

8. Materials Sciences Division, LBNL, Berkeley, CA 94720, USA.

9. Department of Physics, King Abdulaziz University, Jeddah 21589, Saudi Arabia.

10. Department of Physics, Stanford University, Stanford, CA 94305, USA.

11. Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, USA.

Abstract

Decoupling charge and heat transport In metals, electrons carry both charge and heat. As a consequence, electrical conductivity and the electronic contribution to the thermal conductivity are typically proportional to each other. Lee et al. found a large violation of this so-called Wiedemann-Franz law near the insulator-metal transition in VO 2 nanobeams. In the metallic phase, the electronic contribution to thermal conductivity was much smaller than what would be expected from the Wiedemann-Franz law. The results can be explained in terms of independent propagation of charge and heat in a strongly correlated system. Science , this issue p. 371

Funder

A*STAR of Singapore

Science and Engineering Research Council

National Science Foundation of China

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference74 articles.

1. Thermal Transport in a Luttinger Liquid

2. Violation of the Wiedemann-Franz Law at the Kondo Breakdown Quantum Critical Point

3. Large Violation of the Wiedemann-Franz Law in Luttinger Liquids