Multiple Andreev reflections in weak links of superfluid He3−B

J. K. Viljas

doi:10.1103/PhysRevB.71.064509

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Multiple Andreev reflections in weak links of superfluid He3−B

J. K. Viljas

DOI 10.1103/PhysRevB.71.064509 · Physical Review B

T1

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Abstract

We calculate the current-pressure characteristics of a ballistic pinhole aperture between two volumes of B-phase superfluid He3. The most important mechanism contributing to dissipative currents in weak links of this type is the process of multiple Andreev reflections. At low biases this process is significantly affected by relaxation due to inelastic quasiparticle-quasiparticle collisions. In the numerical calculations, suppression of the superfluid order parameter at surfaces is taken into account self-consistently. When this effect is neglected, the theory may be developed analytically like in the case of s-wave superconductors. A comparison with experimental results is presented.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
He3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0.001	Pressure not reported	onset