| Issue |
Europhys. Lett.
Volume 50, Number 4, May II 2000
|
|
|---|---|---|
| Page(s) | 447 - 453 | |
| Section | Atomic and molecular physics | |
| DOI | https://doi.org/10.1209/epl/i2000-00290-6 | |
| Published online | 01 September 2002 | |
Non-conventional screening of the Coulomb interaction in low-dimensional and finite-size systems
1
Department of Applied Physics,
University of Twente
P.O. Box 217,
7500 AE Enschede,
The Netherlands
2
Laboratory of Applied and Solid State Physics, Materials Science Center,
University of Groningen - Nijenborgh 4, 9747 AG Groningen, The Netherlands
Received:
2
February
2000
Accepted:
20
March
2000
We study the screening of the Coulomb interaction in non-polar systems by polarizable atoms. We show that in low dimensions and small finite-size systems this screening deviates strongly from that conventionally assumed. In fact in one dimension the short-range interaction is strongly screened and the long-range interaction is anti-screened thereby strongly reducing the gradient of the Coulomb interaction and therefore the correlation effects. We argue that this effect explains the success of mean-field single-particle theories for large molecules.
PACS: 31.25.Qm – Electron-correlation calculations for polyatomic molecules / 71.20.Tx – Fullerenes and related materials; intercalation compounds / 71.27.+a – Strongly correlated electron systems; heavy fermions
© EDP Sciences, 2000
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