2 M ay 1 99 7 The field theory of Skyrme lattices in quantum Hall ferromagnets


We report the application of the nonlinear σ model to study the multiskyrmion problem in the quantum Hall ferromagnet system. We show that the ground state of the system can be described by a ferromagnet triangular Skyrme lattice near ν = 1 where skyrmions are extremely dilute. We find a transition into antiferromagnet square lattice by increasing the… (More)


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