Hybrid Surface-Phonon-Plasmon Polariton Modes in Graphene/Monolayer h-BN Heterostructures
Abstract
Infrared transmission measurements reveal the hybridization of graphene plasmons and the phonons in a monolayer hexagonal boron nitride (h-BN) sheet. Frequency-wavevector dispersion relations of the electromagnetically coupled graphene plasmon/h-BN phonon modes are derived from measurement of nanoresonators with widths varying from 30 to 300 nm. It is shown that the graphene plasmon mode is split into two distinct optical modes that display an anticrossing behavior near the energy of the h-BN optical phonon at 1370 cm^(–1). We explain this behavior as a classical electromagnetic strong-coupling with the highly confined near fields of the graphene plasmons allowing for hybridization with the phonons of the atomically thin h-BN layer to create two clearly separated new surface-phonon-plasmon-polariton (SPPP) modes.
Additional Information
© 2014 American Chemical Society. Received: March 24, 2014; Revised: May 20, 2014. Publication Date (Web): May 29, 2014. This work was supported by the Air Force Office of Scientific Research under MURI awards FA9550-12-1-0488 (V.W.B.), FA9550-12-1-0024 (S.K. and L.K.K.). M.S.J. and M.C. acknowledge support from the Global Frontier R&D Program on Center for Multiscale Energy Systems funded by the National Research Foundation under the Ministry of Science, ITC & Future Planning, Korea (2011-0031561, 2011-0031577). M.S.J. acknowledges a postdoctoral fellowship from the POSCO TJ Park Foundation. M.C.S. gratefully acknowledges graduate fellowship support from the Resnick Sustainability Institute at Caltech. The authors thank the Kavli Nanoscience Institute at Caltech for support of nanofabrication.Attached Files
Supplemental Material - nl501096s_si_001.pdf
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Additional details
- Eprint ID
- 46173
- DOI
- 10.1021/nl501096s
- Resolver ID
- CaltechAUTHORS:20140610-084252887
- FA9550-12-1-0488
- Air Force Office of Scientific Research (AFOSR)
- FA9550-12-1-0024
- Air Force Office of Scientific Research (AFOSR)
- Global Frontier R&D Program on Center for Multiscale Energy Systems
- 2011-0031561
- National Research Foundation of Korea
- 2011-0031577
- National Research Foundation of Korea
- POSCO TJ Park Foundation
- Resnick Sustainability Institute
- Ministry of Science, ICT and Future Planning (Korea)
- Created
-
2014-06-10Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field
- Caltech groups
- Resnick Sustainability Institute, Kavli Nanoscience Institute