Temperature-dependent terahertz photoconductivity in epitaxial graphene

We report the terahertz photoconductivity in a meander-shaped epitaxial graphene sample. The measurements at wavelengths 280, 148, and 90 μm (frequencies of 1.07, 2.03, and 3.32 THz) demonstrate that the photoconductivity is independent on the wavelength and is related to bolometric heating under th...

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Bibliographic Details
Published in:Applied physics letters 2014-10, Vol.105 (17)
Main Authors: Vasilyev, Yu. B., Vasileva, G. Yu, Ivanov, Yu. L., Novikov, S., Danilov, S. N.
Format: Article
Language:English
Subjects:
Applied physics
Bolometers
Graphene
Photoconductivity
Temperature dependence
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Summary:We report the terahertz photoconductivity in a meander-shaped epitaxial graphene sample. The measurements at wavelengths 280, 148, and 90 μm (frequencies of 1.07, 2.03, and 3.32 THz) demonstrate that the photoconductivity is independent on the wavelength and is related to bolometric heating under the condition of weak localization enhanced due to long sample boundaries.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4900788