Distribution of resonance widths in localized tight-binding models

European Physical Journal B

Volumn 18, Issue 2, 2000, Pages 303-309

  Terraneo, M ^b   Guarneri, I ^a  

^a INFN SEZIONE DI PAVIA   (Italy)

^b NONE

Author keywords

47.52.+j Chaos; 72.10. d Theory of electronic transport; scattering mechanisms; 72.15.Rn Localization effects (Anderson or weak localization)

Indexed keywords

EID: 0000266246     PISSN: 14346028     EISSN: None     Source Type: Journal    
DOI: 10.1007/PL00011073     Document Type: Article

References (12)

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7. -1.5 with a dynamical model with localization ratio 1/18 (private communication).
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11. We note in passing that the single-pole approximation is never valid at N = ∞.
12. The parametric distributions of reference [6] were obtained by diagonalizing an effective Hamiltonian, which simulates coupling to continuum by adding an imaginary shift iπ to the last diagonal element. That marks a difference with our computations, which (of necessity) have a i shift instead. Distributions computed that way are different from ours in the right hand tails - for instance, they exhibit an isolated group of resonances beyond the cutoff, at Γ ∼ π - but are quite similar at small Γ.