Quantization of edge currents along magnetic barriers and magnetic guides

Details Quantization of edge currents along magnetic barriers and magnetic guides Quantization of edge currents along magnetic barriers and magnetic guides

2010-05-17

arxiv.org/abs/1005.2788v1

Mathematics

Spectral Theory

25 pages

Scientific paper

We investigate the edge conductance of particles submitted to an Iwatsuka magnetic field, playing the role of a purely magnetic barrier. We also consider magnetic guides generated by generalized Iwatsuka potentials. In both cases we prove quantization of the edge conductance. Next, we consider magnetic perturbations of such magnetic barriers or guides, and prove stability of the quantized value of the edge conductance. Further, we establish a sum rule for edge conductances. Regularization within the context of disordered systems is discussed as well.

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