Polarization dependence of photocurrent in a metal-graphene-metal device

Minjung Kim, Ho Ang Yoon, Seungwoo Woo, Duhee Yoon, Sang Wook Lee, Hyeonsik Cheong

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

The dependence of the photocurrent generated in a Pd/graphene/Ti junction device on the incident photon polarization is studied. Spatially resolved photocurrent images were obtained as the incident photon polarization is varied. The photocurrent is maximum when the polarization direction is perpendicular to the graphene channel direction and minimum when the two directions are parallel. This polarization dependence can be explained as being due to the anisotropic electron-photon interaction of Dirac electrons in graphene.

Original languageEnglish
Article number073103
JournalApplied Physics Letters
Volume101
Issue number7
DOIs
StatePublished - 13 Aug 2012

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