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Fractional quantum Hall states in charge-imbalanced bilayer systems

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arxiv 1309.7465 v1 pith:3DO3HWNF submitted 2013-09-28 cond-mat.str-el cond-mat.mes-hall

N. Thiebaut , N. Regnault , M.O. Goerbig This is my paper
classification cond-mat.str-elcond-mat.mes-hall
keywords bilayerquantumfractionalhallasymmetriceffectsystemsbias
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We study the fractional quantum Hall effect in a bilayer with charge-distribution imbalance induced, for instance, by a bias gate voltage. The bilayer can either be intrinsic or it can be formed spontaneously in wide quantum wells, due to the Coulomb repulsion between electrons. We focus on fractional quantum Hall effect in asymmetric bilayer systems at filling factor nu=4/11 and show that an asymmetric Halperin-like trial wavefunction gives a valid description of the ground state of the system.

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