Pogorelov, Yuriy G. and Loktev, Vadim M. and Kochan, Denis (2020) Impurity resonance effects in graphene versus impurity location, concentration, and sublattice occupation. PHYSICAL REVIEW B, 102 (15): 155414. ISSN 2469-9950, 2469-9969
Full text not available from this repository. (Request a copy)Abstract
Unique electronic band structure of graphene with its semimetallic features near the charge neutrality point is sensitive to impurity effects. Using the Lifshitz and Anderson impurity models, we study in detail the disorder induced spectral phenomena in the electronic band structure of graphene, namely, the formation of resonances, quasigaps, bound states, impurity subbands, and their overall impact on the electronic band restructuring and the associated Mott-like metal-insulator transitions. We perform a systematic analytical and numerical study for realistic impurities, both substitutional and adsorbed, focusing on those effects that arise from the impurity adatoms locations (top, bridge, and hollow positions), concentration, unequal occupations of the graphene host sublattices, perturbation strengths, etc. Possible experimental and practical implications are discussed as well.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | STATES; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 09 Mar 2021 06:34 |
| Last Modified: | 09 Mar 2021 06:34 |
| URI: | https://pred.uni-regensburg.de/id/eprint/43570 |
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