Current enhancement due to field-induced dark carrier multiplication in graphene
Journal article, 2017

We present a microscopic study on current generation in graphene in response to an electric field. While scattering is generally considered to reduce the current, we reveal that in graphene Auger processes give rise to a current enhancement via a phenomenon we denote dark carrier multiplication. Based on a microscopic approach, we show that, if other scattering channels are absent, this prevents the carrier distribution to reach a stationary value. Taking into account scattering with phonons a finite current is restored, however its value exceeds the stationary current without scattering.

carrier dynamics

graphene

semiconductor Bloch equations

electric field

carrier multiplication

Author

Roland Jago

Chalmers, Physics, Condensed Matter Theory

Florian Wendler

Technische Universität Berlin

Ermin Malic

Chalmers, Physics, Condensed Matter Theory

2D Materials

2053-1583 (eISSN)

Vol. 4 2

Subject Categories

Physical Sciences

DOI

10.1088/2053-1583/aa7408

More information

Latest update

3/1/2018 1