Rycerz, Adam (2010) Magnetoconductance of the Corbino disk in graphene. PHYSICAL REVIEW B, 81 (12): 121404. ISSN 1098-0121,
Full text not available from this repository.Abstract
Electron transport through the Corbino disk in graphene is studied in the presence of uniform magnetic fields. At the Dirac point, we observe conductance oscillations with the flux piercing the disk area Phi(d), characterized by the period Phi(0)=2(h/e)ln(R(o)/R(i)), where R(o)(R(i)) is the outer (inner) disk radius. The oscillations magnitude increase with the radii ratio and exceed 10% of the average conductance for R(o)/R(i)>= 5 in the case of the normal Corbino setup or for R(o)/R(i)>= 2.2 in the case of the Andreev-Corbino setup. At a finite but weak doping, the oscillations still appear in a limited range of vertical bar Phi(d) vertical bar <Phi(max)(d), away from which the conductance is strongly suppressed. At large dopings and weak fields we identify the crossover to a normal ballistic transport regime.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | TRANSPORT; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 06 Aug 2020 05:01 |
| Last Modified: | 06 Aug 2020 05:01 |
| URI: | https://pred.uni-regensburg.de/id/eprint/25124 |
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