Electronic structure of solids with competing periodic potentials.
Science
; 290(5491): 501-3, 2000 Oct 20.
Article
em En
| MEDLINE
| ID: mdl-11039927
ABSTRACT
When electrons are subject to a potential with two incommensurate periods, translational invariance is lost, and no periodic band structure is expected. However, model calculations based on nearly free one-dimensional electrons and experimental results from high-resolution photoemission spectroscopy on a quasi-one-dimensional material do show dispersing band states with signatures of both periodicities. Apparent band structures are generated by the nonuniform distribution of electronic spectral weight over the complex eigenvalue spectrum.
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01-internacional
Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2000
Tipo de documento:
Article