Bolometric response in graphene based superconducting tunnel junctions

Details Bolometric response in graphene based superconducting tunnel junctions Bolometric response in graphene based superconducting tunnel junctions

2011-10-25

arxiv.org/abs/1110.5623v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We fabricate graphene-TiOx-Al tunnel junctions and characterize their radio frequency response. Below the superconducting critical temperature of Al and when biased within the superconducting gap, the devices show enhanced dynamic resistance which increases with decreasing temperature. Application of radio frequency radiation affects the dynamic resistance through electronic heating. The relation between the electron temperature rise and the absorbed radiation power is measured, from which the bolometric parameters, including heat conductance, noise equivalent power and responsivity, are characterized.

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