Accessing Phonon Polaritons in Hyperbolic Crystals by Angle-Resolved Photoemission Spectroscopy
- Scuola Normale Superiore (SNS), Pisa (Italy). National Enterprise for NanoScience and NanoTechnology (NEST) and National Research Council (CNR)
- Univ. of Missouri, Columbia, MO (United States). Dept. of Physics and Astronomy
- California Inst. of Technology (CalTech), Pasadena, CA (United States). Walter Burke Inst. for Theoretical Physics and Inst. for Quantum Information and Matter
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Physics
- Istituto Italiano di Tecnologia (IIT), Genova (Italy). Graphene Lab.
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. In this work 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 anticipated, providing a new probe of PP modes and their coupling to graphene plasmons.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Center for Excitonics (CE)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); US Army Research Office (ARO)
- Grant/Contract Number:
- SC0001088; FG02-05ER46203; desc0001088
- OSTI ID:
- 1370899
- Alternate ID(s):
- OSTI ID: 1212339
- Journal Information:
- Physical Review Letters, Vol. 115, Issue 8; Related Information: CE partners with Massachusetts Institute of Technology (lead); Brookhaven National Laboratory; Harvard University; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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