Plasmonics in graphene at infrared frequencies
TLDR
In this article, the authors show that plasmons in doped graphene simultaneously enable low-loss and significant wave localization for frequencies below that of the optical phonon branch hbar omega{;Oph};\approx 0.2 eV.Abstract:
We point out that plasmons in doped graphene simultaneously enable low-losses and significant wave localization for frequencies below that of the optical phonon branch hbar omega_{;Oph};\approx 0.2 eV. Large plasmon losses occur in the interband regime (via excitation of electron-hole pairs), which can be pushed towards higher frequencies for higher doping values. For sufficiently large dopings, there is a bandwidth of frequencies from omega_{;Oph}; up to the interband threshold, where a plasmon decay channel via emission of an optical phonon together with an electron-hole pair is nonegligible. The calculation of losses is performed within the framework of a random-phase approximation and number conserving relaxation-time approximation. The measured DC relaxation-time serves as an input parameter characterizing collisions with impurities, whereas the contribution from optical phonons is estimated from the influence of the electron-phonon coupling on the optical conductivity. Optical properties of plasmons in graphene are in many relevant aspects similar to optical properties of surface plasmons propagating on dielectric-metal interface, which have been drawing a lot of interest lately because of their importance for nanophotonics. Therefore, the fact that plasmons in graphene could have low losses for certain frequencies makes them potentially interesting for nanophotonic applications.read more
Citations
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疟原虫var基因转换速率变化导致抗原变异[英]/Paul H, Robert P, Christodoulou Z, et al//Proc Natl Acad Sci U S A
TL;DR: PfPMP1)与感染红细胞、树突状组胞以及胎盘的单个或多个受体作用,在黏附及免疫逃避中起关键的作�ly.
Journal ArticleDOI
A graphene-based broadband optical modulator
Ming Liu,Xiaobo Yin,Erick Ulin-Avila,Baisong Geng,Thomas Zentgraf,Long Ju,Feng Wang,Feng Wang,Xiang Zhang,Xiang Zhang +9 more
TL;DR: Graphene-based optical modulation mechanism, with combined advantages of compact footprint, low operation voltage and ultrafast modulation speed across a broad range of wavelengths, can enable novel architectures for on-chip optical communications.
Journal ArticleDOI
Graphene plasmonics for tunable terahertz metamaterials
Long Ju,Baisong Geng,Baisong Geng,Jason Horng,Caglar Girit,Michael C. Martin,Zhao Hao,Hans A. Bechtel,Xiaogan Liang,Alex Zettl,Alex Zettl,Y. Ron Shen,Y. Ron Shen,Feng Wang,Feng Wang +14 more
TL;DR: It is demonstrated that graphene plasmon resonances can be tuned over a broad terahertz frequency range by changing micro-ribbon width and in situ electrostatic doping and the results represent a first look at light-plasmon coupling in graphene and point to potential graphene-based terAhertz metamaterials.
Journal ArticleDOI
Science and technology roadmap for graphene, related two-dimensional crystals, and hybrid systems
Andrea C. Ferrari,Francesco Bonaccorso,Francesco Bonaccorso,Vladimir I. Fal'ko,Konstantin S. Novoselov,Stephan Roche,Peter Bøggild,Stefano Borini,Frank H. L. Koppens,Vincenzo Palermo,Nicola M. Pugno,Nicola M. Pugno,Nicola M. Pugno,Jose A. Garrido,Roman Sordan,Alberto Bianco,Laura Ballerini,Maurizio Prato,Elefterios Lidorikis,Jani Kivioja,Claudio Marinelli,Tapani Ryhänen,Alberto F. Morpurgo,Jonathan N. Coleman,Valeria Nicolosi,Luigi Colombo,Albert Fert,Albert Fert,Mar García-Hernández,Adrian Bachtold,Grégory F. Schneider,Francisco Guinea,Cees Dekker,Matteo Barbone,Zhipei Sun,Costas Galiotis,Alexander N. Grigorenko,Gerasimos Konstantatos,Andras Kis,Mikhail I. Katsnelson,Lieven M. K. Vandersypen,A. Loiseau,Vittorio Morandi,Daniel Neumaier,Emanuele Treossi,Vittorio Pellegrini,Vittorio Pellegrini,Marco Polini,Alessandro Tredicucci,Gareth M. Williams,Byung Hee Hong,Jong Hyun Ahn,Jong Min Kim,Herbert Zirath,Bart J. van Wees,Herre S. J. van der Zant,Luigi Occhipinti,Andrea di Matteo,Ian A. Kinloch,Thomas Seyller,Etienne Quesnel,Xinliang Feng,K.B.K. Teo,Nalin Rupesinghe,Pertti Hakonen,Simon R. T. Neil,Quentin Tannock,Tomas Löfwander,Jari M. Kinaret +68 more
TL;DR: An overview of the key aspects of graphene and related materials, ranging from fundamental research challenges to a variety of applications in a large number of sectors, highlighting the steps necessary to take GRMs from a state of raw potential to a point where they might revolutionize multiple industries are provided.
Journal ArticleDOI
Graphene plasmonics
TL;DR: In this paper, the authors review the field emerging at the intersection of graphene physics and plasmonics and review the applications of graphene-based plasmons for optical devices with extremely high speed, low driving voltage, low power consumption and compact sizes.
References
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TL;DR: This study reports an experimental study of a condensed-matter system (graphene, a single atomic layer of carbon) in which electron transport is essentially governed by Dirac's (relativistic) equation and reveals a variety of unusual phenomena that are characteristic of two-dimensional Dirac fermions.
疟原虫var基因转换速率变化导致抗原变异[英]/Paul H, Robert P, Christodoulou Z, et al//Proc Natl Acad Sci U S A
TL;DR: PfPMP1)与感染红细胞、树突状组胞以及胎盘的单个或多个受体作用,在黏附及免疫逃避中起关键的作�ly.
Journal ArticleDOI
Experimental observation of the quantum Hall effect and Berry's phase in graphene
TL;DR: In this paper, an experimental investigation of magneto-transport in a high-mobility single layer of Graphene is presented, where an unusual half-integer quantum Hall effect for both electron and hole carriers in graphene is observed.