Mesoscopic multiterminal Josephson structures: I. Effects of nonlocal weak coupling

Details Mesoscopic multiterminal Josephson structures: I. Effects of nonlocal weak coupling Mesoscopic multiterminal Josephson structures: I. Effects of nonlocal weak coupling

2001-09-19

arxiv.org/abs/cond-mat/0109333v1

Low Temp. Phys. 27, 616 (2001)

Physics

Condensed Matter

Superconductivity

18 pages, 11 figures

Scientific paper

10.1063/1.1399198

We investigate nonlocal coherent transport in ballistic four-terminal Josephson structures (where bulk superconductors (terminals) are connected through a clean normal layer, e.g., a two-dimensional electron gas). Coherent anisotropic superposition of macroscopic wave functions of the superconductors in the normal region produces phase slip lines (2D analogs to phase slip centres) and time-reversal symmetry breaking 2D vortex states in it, as well as such effects as phase dragging and magnetic flux transfer. The tunneling density of local Andreev states in the normal layer was shown to contain peaks at the positions controlled by the phase differences between the terminals. We have obtained general dependence of these effects on the controlling supercurrent/phase differences between the terminals of the ballistic mesoscopic four-terminal SQUID.

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