Current enhancement due to field-induced dark carrier multiplication in graphene
Artikel i vetenskaplig tidskrift, 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

Författare

Roland Jago

Chalmers, Fysik, Kondenserade materiens teori

Florian Wendler

Technische Universität Berlin

Ermin Malic

Chalmers, Fysik, Kondenserade materiens teori

2D Materials

2053-1583 (eISSN)

Vol. 4 2

Ämneskategorier

Fysik

DOI

10.1088/2053-1583/aa7408