Josephsonin ilmiö ultrakylmissä fermikaasuissa

Heikkinen, Miikka

Published Jan 1, 2009• 0 citations

Abstract

This master's thesis studies the theory of ultracold atomic Fermi gases. A system of two BCS superfluids coupled with radio frequency fields is studied as an analogue of the Josephson junction in ultracold gases. This system is shown to display an asymmetric Josephson effect, which is a genuine expansion of the Josephson effect encountered in solid state physics. Finite temperature effects and interactions between the two BCS superfluids are shown to enrich the dynamics of the system further, leading for example to a phase difference between two components of the alternating Josephson current.

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