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.
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1484842
- Grant/Contract Number:
- DOE-BES Energy Frontiers Center on Programmable Quantum Materials DE-SC0019443
- Resource Type:
- Published Article
- Journal Name:
- Science
- Additional Journal Information:
- Journal Name: Science Journal Volume: 362 Journal Issue: 6419; Journal ID: ISSN 0036-8075
- Publisher:
- American Association for the Advancement of Science (AAAS)
- Country of Publication:
- United States
- Language:
- English
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. https://doi.org/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. https://doi.org/10.1126/science.aau5144.
@article{osti_1484842,
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},
number = 6419,
volume = 362,
place = {United States},
year = {Thu Dec 06 00:00:00 EST 2018},
month = {Thu Dec 06 00:00:00 EST 2018}
}
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https://doi.org/10.1126/science.aau5144
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