Thermal nucleation of the normal state in superheated superconducting tin grains

H. Dubos; T. A. Girard; G. Waysand; P. Perrier; V. Jeudy; D. Limagne; J. Seco; J. I. Collar

doi:10.1103/PhysRevB.58.6468

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Thermal nucleation of the normal state in superheated superconducting tin grains

H. Dubos, T. A. Girard, G. Waysand, P. Perrier, V. Jeudy, D. Limagne, J. Seco, J. I. Collar

DOI 10.1103/PhysRevB.58.6468 · Physical Review B

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Abstract

Suspensions of superheated type-I superconducting Sn microspheres of 16–25 and 10–25 μm diameters were irradiated at temperatures below 1 K and above 2 K by decay electrons from 14C and 35S, respectively. Measurements of the radiation-induced gaps in the superheating transition curves indicate a full heating of the smallest grain volume of each suspension, contrary to a partial heating model based on the difference between quasiparticle relaxation and diffusion rates in Sn. The phonons are in thermal equilibrium with the quasiparticles when the normal state is nucleated.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Sn Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown