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Spin symmetry breaking in bilayer quantum Hall systems

Eugene Demler·Eugene H. Kim·S. Das Sarma
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Abstract

Based on the construction of generalized Halperin wave functions, we predict the possible existence of a large class of broken spin symmetry states in bilayer quantum Hall structures, generalizing the recently suggested canted antiferromgnetic phase to many fractional fillings. We develop the appropriate Chern-Simons theory, and establish explicitly that the low-lying neutral excitation is a Goldstone mode and that the charged excitations are bimerons with continuously tunable (through the canted antiferromagnetic order parameter) electric charge on the individual merons.

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Eugene Demler, Eugene H. Kim, S. Das Sarma. 1999-07-07. Spin symmetry breaking in bilayer quantum Hall systems. https://doi.org/10.1103/physrevb.61.r10567

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