Interlayer Transport in Bilayer Quantum Hall Systems

Details Interlayer Transport in Bilayer Quantum Hall Systems Interlayer Transport in Bilayer Quantum Hall Systems

2005-08-29

arxiv.org/abs/cond-mat/0508702v2

Phys. Rev. Lett. 95, 266804 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.95.266804

Bilayer quantum Hall systems have a broken symmetry ground state at filling factor $\nu=1$ which can be viewed either as an excitonic superfluid or as a pseudospin ferromagnet. We present a theory of inter-layer transport in quantum Hall bilayers that highlights remarkable similarities and critical differences between transport in Josephson junction and ferromagnetic metal spin-transfer devices. Our theory is able to explain the size of the large but finite low bias interlayer conductance and the voltage width of this collective transport anomaly.

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