Lee, Jeongsu and Kochan, Denis and Fabian, Jaroslav (2019) Interplay of resonant states and Landau levels in functionalized graphene. PHYSICAL REVIEW B, 99 (3): 035412. ISSN 2469-9950, 2469-9969
Full text not available from this repository. (Request a copy)Abstract
Adsorbates can drastically alter physical properties of graphene. Particularly important are adatoms and admolecules that induce resonances at the Dirac point. Such resonances limit electron mobilities and spin relaxation times. We present a systematic tight-binding as well as analytical modeling to investigate the properties of resonant states in the presence of a quantizing magnetic field. Landau levels are strongly influenced by the resonances, especially close to the Dirac point. Here the cyclotron motion of electrons around a defect leads to the formation of circulating local currents which are manifested by the appearance of side peaks around the zero-energy Landau level. Our study is based on realistic parameters for H, F, and Cu adatoms, each exhibiting distinct spectral features in the magnetic field. We also show that by observing a local density of states around an adatom in the presence of Landau levels useful microscopic model parameters can be extracted.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DISSIPATION; TRANSPORT; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 27 Apr 2020 08:36 |
| Last Modified: | 27 Apr 2020 08:36 |
| URI: | https://pred.uni-regensburg.de/id/eprint/27735 |
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