Observation of the Dirac fluid and the breakdown of the Wiedemann-Franz law in graphene
Abstract
Electrons inside a conductor are often described as flowing in response to an electric field. This flow rarely resembles anything like the familiar flow of water through a pipe, but three groups describe counterexamples (see the Perspective by Zaanen). Moll et al. found that the viscosity of the electron fluid in thin wires of PdCoO 2 had a major effect on the flow, much like what happens in regular fluids. Bandurin et al. found evidence in graphene of electron whirlpools similar to those formed by viscous fluid flowing through a small opening. Finally, Crossno et al. observed a huge increase of thermal transport in graphene, a signature of so-called Dirac fluids.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 04, 2016
- Source ID
- 10.1126/science.aad0343
Entities
People
- Achim Harzheim
- Andrew J. Lucas
- Jesse Crossno
- Jing K. Shi
- Ke Wang
- Kenji Watanabe
- Kin Chung Fong
- Philip Kim
- Subir Sachdev
- Takashi Taniguchi
- Thomas A. Ohki
- Xiaomeng Liu
Organizations
- Agency for Science, Technology and Research
- Army Research Office
- Defense Advanced Research Projects Agency
- Gordon and Betty Moore Foundation
- Harvard University
- Japan Society for the Promotion of Science
- John Templeton Foundation
- National Institute for Materials Science
- National Research Foundation of Korea
- National Science Foundation
- Perimeter Institute for Theoretical Physics
- RTX
- United States Department of Energy