Is there a d.c. Josephson Effect in Bilayer Quantum Hall Systems?

Details Is there a d.c. Josephson Effect in Bilayer Quantum Hall Systems? Is there a d.c. Josephson Effect in Bilayer Quantum Hall Systems?

2001-03-22

arxiv.org/abs/cond-mat/0103454v1

Phys. Rev. Lett. 87, 196802 (2001).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.87.196802

We argue on the basis of phenomenological and microscopic considerations that
there is no d.c. Josephson effect in ordered bilayer quantum Hall systems, even
at T=0. Instead the tunnel conductance is strongly enhanced, approaching a
finite value proportional to the square of the order parameter as the
interlayer tunneling amplitude vanishes.

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