| Autor: |
González-Santander, C., Domínguez-Adame, F., Hilke, M., Römer, R. A. |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
EPL 104, 17012 (2013) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1209/0295-5075/104/17012 |
| Popis: |
We show that electron states in disordered graphene, with an onsite potential that induces inter-valley scattering, are localised for all energies at disorder as small as 1/6 of the band width of clean graphene. We clarify that, in order for this Anderson-type localisation to be manifested, graphene flakes of size of approximately 200 x 200 nm^2 or larger are needed. For smaller samples, due to the surprisingly large extent of the electronic wave functions, a regime of apparently extended (or even critical) states is identified. Our results complement earlier studies of macroscopically large samples and can explain the divergence of results for finite-size graphene flakes. |
| Databáze: |
arXiv |
| Externí odkaz: |
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