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Anomalously low electronic thermal conductivity in metallic vanadium dioxide.

Publication ,  Journal Article
Lee, S; Hippalgaonkar, K; Yang, F; Hong, J; Ko, C; Suh, J; Liu, K; Wang, K; Urban, JJ; Zhang, X; Dames, C; Hartnoll, SA; Delaire, O; Wu, J
Published in: Science (New York, N.Y.)
January 2017

In electrically conductive solids, the Wiedemann-Franz law requires the electronic contribution to thermal conductivity to be proportional to electrical conductivity. Violations of the Wiedemann-Franz law are typically an indication of unconventional quasiparticle dynamics, such as inelastic scattering, or hydrodynamic collective motion of charge carriers, typically pronounced only at cryogenic temperatures. We report an order-of-magnitude breakdown of the Wiedemann-Franz law at high temperatures ranging from 240 to 340 kelvin in metallic vanadium dioxide in the vicinity of its metal-insulator transition. Different from previously established mechanisms, the unusually low electronic thermal conductivity is a signature of the absence of quasiparticles in a strongly correlated electron fluid where heat and charge diffuse independently.

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Published In

Science (New York, N.Y.)

DOI

EISSN

1095-9203

ISSN

0036-8075

Publication Date

January 2017

Volume

355

Issue

6323

Start / End Page

371 / 374

Related Subject Headings

  • Physics & Astronomy
  • Materials
  • General Science & Technology
 

Citation

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Lee, S., Hippalgaonkar, K., Yang, F., Hong, J., Ko, C., Suh, J., … Wu, J. (2017). Anomalously low electronic thermal conductivity in metallic vanadium dioxide. Science (New York, N.Y.), 355(6323), 371–374. https://doi.org/10.1126/science.aag0410
Lee, Sangwook, Kedar Hippalgaonkar, Fan Yang, Jiawang Hong, Changhyun Ko, Joonki Suh, Kai Liu, et al. “Anomalously low electronic thermal conductivity in metallic vanadium dioxide.Science (New York, N.Y.) 355, no. 6323 (January 2017): 371–74. https://doi.org/10.1126/science.aag0410.
Lee S, Hippalgaonkar K, Yang F, Hong J, Ko C, Suh J, et al. Anomalously low electronic thermal conductivity in metallic vanadium dioxide. Science (New York, NY). 2017 Jan;355(6323):371–4.
Lee, Sangwook, et al. “Anomalously low electronic thermal conductivity in metallic vanadium dioxide.Science (New York, N.Y.), vol. 355, no. 6323, Jan. 2017, pp. 371–74. Epmc, doi:10.1126/science.aag0410.
Lee S, Hippalgaonkar K, Yang F, Hong J, Ko C, Suh J, Liu K, Wang K, Urban JJ, Zhang X, Dames C, Hartnoll SA, Delaire O, Wu J. Anomalously low electronic thermal conductivity in metallic vanadium dioxide. Science (New York, NY). 2017 Jan;355(6323):371–374.
Journal cover image

Published In

Science (New York, N.Y.)

DOI

EISSN

1095-9203

ISSN

0036-8075

Publication Date

January 2017

Volume

355

Issue

6323

Start / End Page

371 / 374

Related Subject Headings

  • Physics & Astronomy
  • Materials
  • General Science & Technology