Hybrid Surface-Phonon-Plasmon Polariton Modes in Graphene/Monolayer h-BN Heterostructures

被引：299

作者：

Brar, Victor W. ^{[1
,2
]}

Jang, Min Seok ^{[3
]}

Sherrott, Michelle ^{[1
]}

Kim, Seyoon ^{[1
]}

Lopez, Josue J. ^{[1
]}

Kim, Laura B. ^{[1
]}

Choi, Mansoo ^{[3
,4
]}

Atwater, Harry ^{[1
,2
]}

机构：

[1] CALTECH, Thomas J Watson Lab Appl Phys, Pasadena, CA 91125 USA

[2] CALTECH, Kavli Nanosci Inst, Pasadena, CA 91125 USA

[3] Seoul Natl Univ, Global Frontier Ctr Multiscale Energy Syst, Seoul 151747, South Korea

[4] Seoul Natl Univ, Sch Mech & Aerosp Engn, Div WCU Multiscale Mech Design, Seoul 151742, South Korea

来源：

NANO LETTERS | 2014年 / 14卷 / 07期

基金：

新加坡国家研究基金会;

关键词：

Graphene; boron nitride; plasmonics; strong coupling; phonon-induced transparency; surface phonon plasmon polariton; plasmon phonon hybridization; GRAPHENE; SPECTROSCOPY;

D O I：

10.1021/nl501096s

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：3876 / 3880

页数：5

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