Ensemble density-functional approach to charge-spin textures in inhomogeneous quantum Hall systems

Abstract

We extend our ensemble density-functional approach to quantum Hall systems to include noncollinear spins to study charge-spin textures in inhomogeneous quantum Hall systems. We have studied the edge reconstruction in quantum dots at unit bulk filling factor and at 1/3 bulk filling factor as a function of the stiffness of an external confining potential. For soft enough edges, these systems reconstruct to a state in which the electron spins rotate gently as the edge is approached, with a nontrivial spin-charge texture at the edge of the system

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