Handschin, Clevin and Makk, Peter and Rickhaus, Peter and Liu, Ming-Hao and Watanabe, K. and Taniguchi, T. and Richter, Klaus and Schonenberger, Christian (2017) Fabry-Perot Resonances in a Graphene/hBN Moire Superlattice. NANO LETTERS, 17 (1). pp. 328-333. ISSN 1530-6984, 1530-6992
Full text not available from this repository. (Request a copy)Abstract
While Fabry-Perot (FP) resonances and Moire superlattices are intensively studied in graphene on hexagonal boron nitride (hBN), the two effects have not been discussed in their coexistence. Here we investigate the FP oscillations in a ballistic pnp-junctions in the presence and absence of a Moire superlattice. First, we address the effect of the smoothness of the confining potential on the visibility of the FP resonances and carefully map the evolution of the FP cavity size as a function of densities inside and outside the cavity in the absence of a superlattice, when the cavity is bound by regular pn-junctions. Using a sample with a Moire superlattice, we next show that an FP cavity can also be formed by interfaces that mimic a pn-junction but are defined through a satellite Dirac point due to the superlattice. We carefully analyze the FP resonances, which can provide insight into the band-reconstruction due to the superlattice.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | HEXAGONAL BORON-NITRIDE; P-N-JUNCTIONS; BALLISTIC GRAPHENE; DIRAC FERMIONS; QUANTUM; STATES; OSCILLATIONS; hBN-encapsulated graphene; ballistic graphene; tunable cavity length; Fabry-Perot resonances; Moire superlattice; band-reconstruction |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2018 12:58 |
| Last Modified: | 20 Feb 2019 10:28 |
| URI: | https://pred.uni-regensburg.de/id/eprint/140 |
Actions (login required)
 |
View Item |
