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Fabry-Pérot Resonances in a Graphene/h-BN Moiré Superlattice

Handschin, Clevin and Rickhaus, Peter and Watanabe, K. and Richter, Klaus and Makk, Péter and Liu, Ming-Hao and Taniguchi, T. and Schönenberger, Christian. (2016) Fabry-Pérot Resonances in a Graphene/h-BN Moiré Superlattice. Nano Letters, 17 (1). pp. 328-333.

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Official URL: http://edoc.unibas.ch/55959/

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Abstract

While Fabry-Pérot (FP) resonances and Moiré 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 Moiré 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 Moiré 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.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Experimentalphysik Nanoelektronik (Schönenberger)
UniBasel Contributors:Schönenberger, Christian and Handschin, Clevin and Makk, Peter and Rickhaus, Peter
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Chemical Society
ISSN:1530-6984
e-ISSN:1530-6992
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:20 Sep 2017 11:11
Deposited On:20 Sep 2017 11:11

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