Impedance field and transition from thermal to shot noise in Cd1-xZnxTe semi-insulating Ohmic detectors (Articolo in rivista)

Type
Label
  • Impedance field and transition from thermal to shot noise in Cd1-xZnxTe semi-insulating Ohmic detectors (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Alternative label
  • Rosini, M; Reggiani, L; Gomila, G (2007)
    Impedance field and transition from thermal to shot noise in Cd1-xZnxTe semi-insulating Ohmic detectors
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Rosini, M; Reggiani, L; Gomila, G (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 75 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Lecce, Dipartimento Ingn Innovazione, CNR, INFM,Natl Nanotechnol Lab, I-73100 Lecce, Italy; Univ Barcelona, Dept Elect, E-08028 Barcelona, Spain; CREBEC, Lab Nanobioengn, E-08028 Barcelona, Spain (literal)
Titolo
  • Impedance field and transition from thermal to shot noise in Cd1-xZnxTe semi-insulating Ohmic detectors (literal)
Abstract
  • Within a drift-diffusion model we investigate the role of the self-consistent electric field in determining the impedance field of a macroscopic Ohmic (linear) resistor made by a compensated semi-insulating semiconductor at arbitrary values of the applied voltage. The presence of long-range Coulomb correlations is found to be responsible for a reshaping of the spatial profile of the impedance field. This reshaping gives a null contribution to the macroscopic impedance but modifies essentially the transition from thermal to shot noise of a macroscopic linear resistor. Theoretical calculations explain a set of noise experiments carried out in semi-insulating CdZnTe detectors. (literal)
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