Observation of the Dirac fluid and the breakdown of the Wiedemann-Franz law in graphene.

Quantum Hydrodynamic Transport in Graphene Transport in inhomogeneous quantum critical fluids and in the Dirac fluid in graphene

Transport in inhomogeneous quantum critical fluids and in the Dirac fluid in graphene Andrew Lucas, Jesse Crossno, Kin Chung Fong, Philip Kim, Subir Sachdev arXiv:1510.01738 Observation of the Dirac fluid and the breakdown of the Wiedemann-Franz law in graphene Jesse Crossno, Jing K. Shi, Ke Wang, Xiaomeng Liu, Achim Harzheim, Andrew Lucas, Subir Sachdev, Philip Kim, Takashi Taniguchi, Kenji Wa...

Anomalously low electronic thermal conductivity in metallic vanadium dioxide.

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...

Electronic Transmission Wave Function of Disordered Graphene by Direct Method and Green's Function Method

We describe how to obtain electronic transport properties of disordered graphene, including the tight binding model and nearest neighbor hopping. We present a new method for computing, electronic transport wave function and Greens function of the disordered Graphene. In this method, based on the small rectangular approximation, break up the potential barriers in to small parts. Then using the f...

Violation of the Wiedemann-Franz Law in Hydrodynamic Electron Liquids.

The Wiedemann-Franz law, connecting the electronic thermal conductivity to the electrical conductivity of a disordered metal, is generally found to be well satisfied even when electron-electron (e-e) interactions are strong. In ultraclean conductors in the hydrodynamic regime, however, large deviations from the standard form of the law are expected, due to the fact that e-e interactions affect ...

Supplementary material for the PRL submitted paper of ”Violation of Wiedemann-Franz law at the Kondo breakdown quantum critical point” : Quantum Boltzman equation study