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arxiv: 1810.06166 · v1 · pith:FVEBEHJKnew · submitted 2018-10-15 · ❄️ cond-mat.dis-nn

Distribution of S-matrix poles for one-dimensional disordered wires

classification ❄️ cond-mat.dis-nn
keywords disorderpoless-matrixwirecouplingdistributionleadsone-dimensional
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By the use of the effective non-Hermitian Hamiltonian approach to scattering we study the distribution of the scattering matrix (S-matrix) poles in one-dimensional (1D) models with various types of diagonal disorder. We consider the case of 1D tight-binding wires, with both on-site uncorrelated and correlated disorder, coupled to the continuum through leads attached to the wire edges. In particular, we focus on the location of the S-matrix poles in the complex plane as a function of the coupling strength and the disorder strength. Specific interest is paid to the super-radiance transition emerging at the perfect coupling between wire and leads. We also study the effects of correlations intentionally imposed to the wire disorder.

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