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http://hdl.handle.net/2445/10630
Title: | Impedance field and transition from thermal to shot noise in Cd1-xZnxTe semi-insulating Ohmic detectors |
Author: | Rosini, M. Reggiani, L. (Lino), 1941- Gomila Lluch, Gabriel |
Keywords: | Física de l'estat sòlid Electrònica quàntica Electronic transport in condensed matter Electronic structure and electrical properties of surfaces Quantum electronics |
Issue Date: | 2007 |
Publisher: | The American Physical Society |
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. |
Note: | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.75.045209 |
It is part of: | Physical Review B, 2007, vol. 75, núm. 4, p. 045209-1-045209-9 |
URI: | http://hdl.handle.net/2445/10630 |
Related resource: | http://dx.doi.org/10.1103/PhysRevB.75.045209 |
ISSN: | 0163-1829 |
Appears in Collections: | Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) |
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