| Issue |
Europhys. Lett.
Volume 46, Number 4, May II 1999
|
|
|---|---|---|
| Page(s) | 519 - 523 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1999-00294-2 | |
| Published online | 01 September 2002 | |
Influence of a bound electron on the screening of a test charge by an electron gas
Laboratoire de Physique des Composants à Semiconducteurs,
CNRS (UMRS 5531) ENSERG - 23, rue des Martyrs, 38016 Grenoble France
Received:
29
September
1998
Accepted:
10
March
1999
By including the contribution of a bound electron to the potential to be screened, it is shown that the screening cloud around a Coulomb charge is repelled so as to enable the formation of a persistent localized state. This result is obtained either with Thomas-Fermi or Lindhard screening, and is applied to the determination of Mott's critical density.
PACS: 71.30.+h – Metal-insulator transitions and other electronic transitions / 71.10.Ca – Electron gas, Fermi gas / 71.55.-i – Impurity and defect levels
© EDP Sciences, 1999
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