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arXiv · 1206.1392

Terahertz radiation induced ballistic electron transport in graphene

Shuntaro Tani·François Blanchard·Koichiro Tanaka
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Abstract

We investigated ultrafast carrier dynamics in graphene with near-infrared transient absorption measurement after intense half-cycle terahertz pulse excitation. The terahertz electric field efficiently drives the carriers, inducing large transparency in the near-infrared region. Theoretical calculations using the Boltzmann transport equation quantitatively reproduce the experimental findings. This good agreement suggests that the intense terahertz field should promote remarkable impact ioniza- tion process, which leads to suppression of optical phonon emission and results in efficient carrier transport in graphene.

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Shuntaro Tani, François Blanchard, Koichiro Tanaka. 2012-06-07. Terahertz radiation induced ballistic electron transport in graphene. https://arxiv.org/abs/1206.1392

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