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Title: Photonic crystals for nano-light in moiré graphene superlattices

Abstract

Graphene is an atomically thin plasmonic medium that supports highly confined plasmon polaritons, or nano-light, with very low loss. Electronic properties of graphene can be drastically altered when it is laid upon another graphene layer, resulting in a moiré superlattice. The relative twist angle between the two layers is a key tuning parameter of the interlayer coupling in thus-obtained twisted bilayer graphene (TBG). We studied the propagation of plasmon polaritons in TBG by infrared nano-imaging. We discovered that the atomic reconstruction occurring at small twist angles transforms the TBG into a natural plasmon photonic crystal for propagating nano-light. This discovery points to a pathway for controlling nano-light by exploiting quantum properties of graphene and other atomically layered van der Waals materials, eliminating the need for arduous top-down nanofabrication.

Authors:
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Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Programmable Quantum Materials (Pro-QM); Columbia Univ., New York, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1566719
DOE Contract Number:  
SC0018218; SC0018426; SC0019443
Resource Type:
Journal Article
Journal Name:
Science
Additional Journal Information:
Journal Volume: 362; Journal Issue: 6419; Journal ID: ISSN 0036-8075
Publisher:
AAAS
Country of Publication:
United States
Language:
English
Subject:
optics, defects, charge transport, superconductivity, magnetism and spin physics, mesoscale science, materials and chemistry by design, mesostructured materials, synthesis (novel materials), synthesis (self-assembly)

Citation Formats

Sunku, S. S., Ni, G. X., Jiang, B. Y., Yoo, H., Sternbach, A., McLeod, A. S., Stauber, T., Xiong, L., Taniguchi, T., Watanabe, K., Kim, P., Fogler, M. M., and Basov, D. N. Photonic crystals for nano-light in moiré graphene superlattices. United States: N. p., 2018. Web. doi:10.1126/science.aau5144.
Sunku, S. S., Ni, G. X., Jiang, B. Y., Yoo, H., Sternbach, A., McLeod, A. S., Stauber, T., Xiong, L., Taniguchi, T., Watanabe, K., Kim, P., Fogler, M. M., & Basov, D. N. Photonic crystals for nano-light in moiré graphene superlattices. United States. doi:10.1126/science.aau5144.
Sunku, S. S., Ni, G. X., Jiang, B. Y., Yoo, H., Sternbach, A., McLeod, A. S., Stauber, T., Xiong, L., Taniguchi, T., Watanabe, K., Kim, P., Fogler, M. M., and Basov, D. N. Thu . "Photonic crystals for nano-light in moiré graphene superlattices". United States. doi:10.1126/science.aau5144.
@article{osti_1566719,
title = {Photonic crystals for nano-light in moiré graphene superlattices},
author = {Sunku, S. S. and Ni, G. X. and Jiang, B. Y. and Yoo, H. and Sternbach, A. and McLeod, A. S. and Stauber, T. and Xiong, L. and Taniguchi, T. and Watanabe, K. and Kim, P. and Fogler, M. M. and Basov, D. N.},
abstractNote = {Graphene is an atomically thin plasmonic medium that supports highly confined plasmon polaritons, or nano-light, with very low loss. Electronic properties of graphene can be drastically altered when it is laid upon another graphene layer, resulting in a moiré superlattice. The relative twist angle between the two layers is a key tuning parameter of the interlayer coupling in thus-obtained twisted bilayer graphene (TBG). We studied the propagation of plasmon polaritons in TBG by infrared nano-imaging. We discovered that the atomic reconstruction occurring at small twist angles transforms the TBG into a natural plasmon photonic crystal for propagating nano-light. This discovery points to a pathway for controlling nano-light by exploiting quantum properties of graphene and other atomically layered van der Waals materials, eliminating the need for arduous top-down nanofabrication.},
doi = {10.1126/science.aau5144},
journal = {Science},
issn = {0036-8075},
number = 6419,
volume = 362,
place = {United States},
year = {2018},
month = {12}
}

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