Abstract
A generalization of the Skocpol-Beasley-Tinkham hotspot theory to include an approximate temperature dependence of the conductive heat transfer term of the heat flow equations clearly indicates that the role of the thermal conductivity of the material of the film is not reflected in the observed temperature dependence of the minimum current I h required to sustain a hotspot in a long, thin-film superconductor. This observation leads to the derivation of a simplified expression for I h valid for a wider range of bath temperatures.
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Dharmadurai, G., Murthy, N.S.S. A simplified expression for the minimum hotspot current in long, thin-film superconductors. J Low Temp Phys 37, 269–276 (1979). https://doi.org/10.1007/BF00119189
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DOI: https://doi.org/10.1007/BF00119189