Anisotropic photoconductivity in graphene
Maxim Trushin, John Schliemann
TL;DR
This paper studies how linearly polarized light causes highly anisotropic photoconductivity in graphene, which can be used for light polarization detection due to pseudospin selection rules.
Contribution
It demonstrates the anisotropic photoconductivity in graphene caused by inter-band transitions and pseudospin effects, providing insights for optoelectronic applications.
Findings
Photoconductivity in graphene is highly anisotropic under linearly polarized light.
The anisotropy arises from pseudospin selection rules for Dirac carriers.
Potential application in light polarization detection.
Abstract
We investigate the photoconductivity of graphene within the relaxation time approximation. In presence of the inter-band transitions induced by the linearly polarized light the photoconductivity turns out to be highly anisotropic due to the pseudospin selection rule for Dirac-like carriers. The effect can be observed in clean undoped graphene samples and be utilized for light polarization detection.
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