Electron structure of topologically disordered metals
Here two methods for calculating the density of states of electrons in conduction band of disordered metals are investigated. The first one is based on the usage of one-parameter trial electron wave function. The equation for density of states gotten within this method is more general as compared...
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| Datum: | 2005 |
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| 1. Verfasser: | |
| Format: | Artikel |
| Sprache: | English |
| Veröffentlicht: |
Інститут фізики конденсованих систем НАН України
2005
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| Schriftenreihe: | Condensed Matter Physics |
| Online Zugang: | http://dspace.nbuv.gov.ua/handle/123456789/119749 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Electron structure of topologically disordered metals / P. Yakibchuk // Condensed Matter Physics. — 2005. — Т. 8, № 3(43). — С. 537–546. — Бібліогр.: 7 назв. — англ. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | Here two methods for calculating the density of states of electrons in conduction
band of disordered metals are investigated. The first one is based
on the usage of one-parameter trial electron wave function. The equation
for density of states gotten within this method is more general as compared
to the results of perturbation theory. Electron-ion interaction is applied in
the form of electron-ion structure factor, which makes it possible to use this
method for a series of systems where potential form factor is not a small
value and the perturbation theory fails. It also gives us well-known results
of Relel-Schrodinger and Brilliuen-Vigner perturbation theory in case of
small potential. Basically, the second approach is a common perturbation
theory for pseudo-potential and Green’s function method. It considers the
contributions up to the third order. The results of computation for density of
states in some non-transition metals are presented. The deviation of density
of states causing the appearance of pseudo-gap is clearly recognized. |
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