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arXiv · 1805.02987

Relativistic Gurzhi effect in channels of Dirac materials

Oleksiy Kashuba·Björn Trauzettel·Laurens W. Molenkamp
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Abstract

Charge transport in channel-shaped 2D Dirac systems is studied employing the Boltzmann equation. The dependence of the resistivity on temperature and chemical potential is investigated. An accurate understanding of the influence of electron-electron interaction and material disorder allows us to identify a parameter regime, where the system reveals hydrodynamic transport behavior. We point out the conditions for three Dirac fermion specific features: heat flow hydrodynamics, pseudo\-diffusive transport, and the electron-hole scattering dominated regime. It is demonstrated that for clean samples the relativistic Gurzhi effect, a definite indicator of hydrodynamic transport, can be observed.

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Oleksiy Kashuba, Björn Trauzettel, Laurens W. Molenkamp. 2018-05-24. Relativistic Gurzhi effect in channels of Dirac materials. https://doi.org/10.1103/physrevb.97.205129

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