Статьи автора

Detection of terahertz radiation with the p-n graphene grid

Номер выпуска 2 от 01.08.2025

We developed a cryogenic graphene detector for the sub-THz range. Two types of detection operation are envisaged: the bolometeric and the photovoltaic. We find that the leading mode of operation is bolometric. The epitaxial graphene on SiC used in the detector has a strong temperature-dependent weak localization correction to the conductance below 25 K. The sub-THz radiation elevates the temperature of the electron system in the graphene, and thus suppresses the weak localization. No photovoltaic effect is detected. The responsivity of the detector reaches ∼1⋅10 A/W below 1 K.

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