Evolution of $nu=1$ Bilayer Quantum Hall Ferromagnet

Details Evolution of $nu=1$ Bilayer Quantum Hall Ferromagnet Evolution of $nu=1$ Bilayer Quantum Hall Ferromagnet

2002-04-22

arxiv.org/abs/cond-mat/0204461v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevB.66.153310

The natures of the ground state in a $\nu_{\rm T}=1$ bilayer quantum Hall system at a variety of layer spacing are investigated. At small layer separations the system exhibits spontaneous interlayer phase coherence. It is claimed that the Halperin's (1,1,1) state is not relevant in the incompressible regime near the incompressible to compressible transition point in which the Josephson-like effect was observed. The two-particle correlation function shows the deflated correlation hole at this regime. An effective model that can give a good approximation to the ground state is proposed. A connection to the modified composite fermion theory is discussed.

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