Intralayer and interlayer electron–phonon interactions in twisted graphene heterostructures View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2018-12

AUTHORS

G. S. N. Eliel, M. V. O. Moutinho, A. C. Gadelha, A. Righi, L. C. Campos, H. B. Ribeiro, Po-Wen Chiu, K. Watanabe, T. Taniguchi, P. Puech, M. Paillet, T. Michel, P. Venezuela, M. A. Pimenta

ABSTRACT

The understanding of interactions between electrons and phonons in atomically thin heterostructures is crucial for the engineering of novel two-dimensional devices. Electron-phonon (el-ph) interactions in layered materials can occur involving electrons in the same layer or in different layers. Here we report on the possibility of distinguishing intralayer and interlayer el-ph interactions in samples of twisted bilayer graphene and of probing the intralayer process in graphene/h-BN by using Raman spectroscopy. In the intralayer process, the el-ph scattering occurs in a single graphene layer and the other layer (graphene or h-BN) imposes a periodic potential that backscatters the excited electron, whereas for the interlayer process the el-ph scattering occurs between states in the Dirac cones of adjacent graphene layers. Our methodology of using Raman spectroscopy to probe different types of el-ph interactions can be extended to study any kind of graphene-based heterostructure. More... »

PAGES

1221

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/s41467-018-03479-3

DOI

http://dx.doi.org/10.1038/s41467-018-03479-3

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1101638982

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/29572537


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