Composite-Fermion Analysis of the Double-Layer Fractional Quantum Hall System

Abstract

Effect of interlayer tunneling in the double-layer fractional quantum Hall system at the total Landau level filling of $\nu =1/m$ ($m$: odd integer) is analyzed with the composite-fermion approach in which the flux attachment is directly applied to the electron-electron interaction. A comparison with a numerical result indicates that the vertically coupled Laughlin liquids may be regarded as a system of composite fermions with {\em reduced} interparticle interactions and {\em unchanged} interlayer tunneling, which makes the quantum-Hall regime, identified by a gap in the pseudospin-wave excitation mode, wider as $\nu$ becomes $1/3,1/5,\dots$.

arXiv comment11 pages, revtex, 2 figures available from [email protected]

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Cited by in corpus (5)

• Magic Numbers and Optical Absorption Spectrum in Vertically Coupled Quantum Dots in the Fractional Quantum Hall Regime
• Vertically coupled double quantum dots in magnetic fields
• Spin-squeezed Ground States in the Bilayer Quantum Hall Ferromagnet
• Excitation spectrum of Bilayer $\nu =2$ Quantum Hall Systems
• Interaction-induced localization-delocalization transition in the double-layer quantum Hall system