Even-Odd Effect in Spontaneously Coherent Bilayer Quantum Hall Droplets

Details Even-Odd Effect in Spontaneously Coherent Bilayer Quantum Hall Droplets Even-Odd Effect in Spontaneously Coherent Bilayer Quantum Hall Droplets

2002-12-04

arxiv.org/abs/cond-mat/0212106v1

Phys. Rev. Lett. 91, 026804 (2003)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

3 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.91.026804

Using exact diagonalization in the disc geometry we predict a novel even-odd effect in the Coulomb blockade spectra of vertically coupled double quantum dots under an external magnetic field. The even-odd effect in the tunneling conductance is a direct manifestation of spontaneous interlayer phase coherence, and is similar to the even-odd resonance in the Cooper pair box problem in mesoscopic superconducting grains. Coherent fluctuations in the number of Cooper pairs in superconductors is analogous to the fluctuations in the relative number difference between the two layers in quantum Hall droplets.

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