Does someone know the low temperature resistivity of silver epoxy ? At room temperature it is around 10^-3 10^-4 ohm.cm, but around 4 K ?

08 August 2018 1 6K Report

I have contacted a sample (graphene) to wires (copper) with conductive epoxy (silver). At room temperature we measure a resistance around 50 ohm between the two end of the wires. But at 4 K in UHV, we measure around 250 ohm. This is why I interrogate myself around a possible increase of the resistivity of the epoxy....

Muhammad Shahbaz Anwar

I presume you are doing two point measurements. Resistance can increase with decreasing temperature due to a bad contact, if it is not the materials property.

We are using Dupont, 6836. We do not observe increase in resistance until our contact are bad.

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