Accessing Phonon Polaritons in Hyperbolic Crystals by Angle-Resolved Photoemission Spectroscopy
Abstract
Recently studied hyperbolic materials host unique phonon-polariton (PP) modes. The ultrashort wavelengths of these modes, as well as their low damping, hold promise for extreme subdiffraction nanophotonics schemes. Polar hyperbolic materials such as hexagonal boron nitride can be used to realize long-range coupling between PP modes and extraneous charge degrees of freedom. The latter, in turn, can be used to control and probe PP modes. Here we analyze coupling between PP modes and plasmons in an adjacent graphene sheet, which opens the door to accessing PP modes by angle-resolved photoemission spectroscopy (ARPES). A rich structure in the graphene ARPES spectrum due to PP modes is predicted, providing a new probe of PP modes and their coupling to graphene plasmons.
Additional Information
© 2015 American Physical Society. Received 22 April 2015; published 21 August 2015. We gratefully acknowledge F. H. L. Koppens for useful discussions. This work was supported by the EC under the Graphene Flagship program (Contract No. CNECT-ICT-604391) (A. T. and M. P.), MIUR (A. T. and M. P.) through the programs "FIRB—Futuro in Ricerca 2010"—Project "PLASMOGRAPH" (Grant No. RBFR10M5BT) and "Progetti Premiali 2012"—Project "ABNANOTECH," the U.S. Department of Energy under Grant No. DEFG02-05ER46203 (A. P.), and a Research Board Grant at the University of Missouri (A. P.). Work at MIT was supported as part of the Center for Excitonics, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under Award No. desc0001088. This work was also supported, in part, by the U.S. Army Research Laboratory and the U.S. Army Research Office through the Institute for Soldier Nanotechnologies, under Contract No. W911NF-13-D-0001. Free software [31] was used.Attached Files
Published - PhysRevLett.115.087401.pdf
Submitted - songy.pdf
Supplemental Material - supplemental-material.pdf
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Additional details
- Alternative title
- Accessing phonon polaritons in hyperbolic crystals by ARPES
- Eprint ID
- 58758
- Resolver ID
- CaltechAUTHORS:20150702-143753769
- CNECT-ICT-604391
- European Commission, Graphene Flagship Program
- MIUR, FIRB - Futuro in Ricerca 2010
- RBFR10M5BT
- MIUR, Project PLASMOGRAPH
- MIUR, Progetti Premiali 2012 Project ABNANOTECH
- University of Missouri
- DE-FG02-05ER46203
- Department of Energy (DOE)
- desc0001088
- Department of Energy (DOE)
- W911NF-13-D-0001
- Army Research Office (ARO)
- Created
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2015-07-06Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field
- Caltech groups
- Walter Burke Institute for Theoretical Physics, Institute for Quantum Information and Matter