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Fabry-Pérot Resonances in a Graphene/hBN Moiré Superlattice.

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 su... Full description

Journal Title: Nano letters January 11, 2017, Vol.17(1), pp.328-333
Main Author: Handschin, Clevin
Other Authors: Makk, Péter , Rickhaus, Peter , Liu, Ming-Hao , Watanabe, K , Taniguchi, T , Richter, Klaus , Schönenberger, Christian
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: E-ISSN: 1530-6992 ; DOI: 1530-6992 ; DOI: 10.1021/acs.nanolett.6b04137
Link: http://search.proquest.com/docview/1851285689/?pq-origsite=primo
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title: Fabry-Pérot Resonances in a Graphene/hBN Moiré Superlattice.
format: Article
creator:
  • Handschin, Clevin
  • Makk, Péter
  • Rickhaus, Peter
  • Liu, Ming-Hao
  • Watanabe, K
  • Taniguchi, T
  • Richter, Klaus
  • Schönenberger, Christian
subjects:
  • Fabry-Pérot Resonances
  • Moiré Superlattice
  • Ballistic Graphene
  • Band-Reconstruction
  • Hbn-Encapsulated Graphene
  • Tunable Cavity Length
ispartof: Nano letters, January 11, 2017, Vol.17(1), pp.328-333
description: 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.
language: eng
source:
identifier: E-ISSN: 1530-6992 ; DOI: 1530-6992 ; DOI: 10.1021/acs.nanolett.6b04137
fulltext: no_fulltext
issn:
  • 15306992
  • 1530-6992
url: Link


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titleFabry-Pérot Resonances in a Graphene/hBN Moiré Superlattice.
creatorHandschin, Clevin ; Makk, Péter ; Rickhaus, Peter ; Liu, Ming-Hao ; Watanabe, K ; Taniguchi, T ; Richter, Klaus ; Schönenberger, Christian
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subjectFabry-Pérot Resonances ; Moiré Superlattice ; Ballistic Graphene ; Band-Reconstruction ; Hbn-Encapsulated Graphene ; Tunable Cavity Length
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descriptionWhile 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.
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