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Título: | Nonlinear screening in two-dimensional electron gases |
Autor: | Zaremba, E.; Nagy, Istvan; Echenique, Pedro M. CSIC ORCID | Fecha de publicación: | 2003 | Editor: | American Physical Society | Citación: | Physical Review Letters 90(4): 046801 (2003) | Resumen: | We have performed self-consistent calculations of the nonlinear screening of a point charge Z in a two-dimensional electron gas using a density functional theory method. We find that the screened potential for a Z=1 charge supports a bound state even in the high-density limit where one might expect perturbation theory to apply. To explain this behavior, we prove a theorem to show that the results of linear response theory are in fact correct even though bound states exist. | Versión del editor: | https://doi.org/10.1103/PhysRevLett.90.046801 | URI: | http://hdl.handle.net/10261/225255 | DOI: | 10.1103/PhysRevLett.90.046801 | ISSN: | 0031-9007 |
Aparece en las colecciones: | (CFM) Artículos |
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nonlingases.pdf | 139,01 kB | Adobe PDF | Visualizar/Abrir |
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