Design of π electron network in graphene using atomic Pt adsorbates
| Autor: | Yoshiteru Takagi, Susumu Okada |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Magnetic moment Condensed matter physics Graphene General Chemistry Electron Condensed Matter Physics law.invention Brillouin zone Adsorption Zigzag law Physics::Atomic and Molecular Clusters General Materials Science Physics::Chemical Physics Dispersion (chemistry) Line (formation) |
| Zdroj: | Journal of Physics and Chemistry of Solids. 73:777-780 |
| ISSN: | 0022-3697 |
| DOI: | 10.1016/j.jpcs.2012.01.023 |
| Popis: | Based on a first-principles total-energy calculation, we demonstrate the possibility of π electron network design in graphene using atomic Pt adsorbate. The d state of the adsorbed Pt atoms hybridizes with the π state of graphene, which effectively creates a boundary in the two-dimensional π electron network in graphene. By adsorbing Pt atoms along the line parallel to the zigzag direction in graphene, we found that a characteristic flat dispersion band emerges at the zone boundary of the two-dimensional Brillouin zone. This flat dispersion band is partially filled by electrons, which induces a magnetic moment in this system of non-magnetic elements. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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