S-matrix pole trajectories in quantum wires with resonantly coupled cavities

G. Cattapan (), P. Lotti and A. Pascolini

The European Physical Journal B: Condensed Matter and Complex Systems, 2006, vol. 53, issue 3, 387-394

Abstract: We consider a T-shaped, one-dimensional quantum waveguide containing an attractive or repulsive impurity in the lateral stub, and study how the resonance poles move in the complex k-plane when the strength or the position of the defect changes. Similarities and differences with respect to standard potential scattering problems are highlighted. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Keywords: 73.63.Nm Quantum wires; 73.23.Ad Ballistic transport; 72.10.Fk Scattering by point defects; dislocations; surfaces; and other imperfections (including Kondo effect) (search for similar items in EconPapers)
Date: 2006
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DOI: 10.1140/epjb/e2006-00394-3

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