Novel midinfrared plasmonic properties of bilayer graphene.
We study the midinfrared plasmonic response in Bernal-stacked bilayer graphene. Unlike its monolayer counterpart, bilayer graphene accommodates optically active phonon modes and a resonant interband transition at infrared frequencies. They strongly modify the plasmonic properties of bilayer graphene, leading to Fano-type resonances, giant plasmonic enhancement of infrared phonon absorption, a narrow window of optical transparency, and a new plasmonic mode at higher energy than that of the classical plasmon.
IBM T.J. Watson Research Center, 1101 Kitchawan Rd, Yorktown Heights, New York 10598, USA.
Tony
T
Low
Instituto de Ciencia de Materiales de Madrid, CSIC, Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain.
Francisco
F
Guinea
IBM T.J. Watson Research Center, 1101 Kitchawan Rd, Yorktown Heights, New York 10598, USA.
Hugen
H
Yan
IBM T.J. Watson Research Center, 1101 Kitchawan Rd, Yorktown Heights, New York 10598, USA and Yale University, 15 Prospect Street, New Haven, Connecticut 06511, USA.
Fengnian
F
Xia
IBM T.J. Watson Research Center, 1101 Kitchawan Rd, Yorktown Heights, New York 10598, USA.
Phaedon
P
Avouris