Infrared Nanoscopy of Dirac Plasmons at the Graphene-SiO2 Interface

被引：514

作者：

Fei, Zhe ^{[1
]}

Andreev, Gregory O. ^{[1
]}

Bao, Wenzhong ^{[2
]}

Zhang, Lingfeng M. ^{[1
,3
]}

McLeod, Alexander S. ^{[1
]}

Wang, Chen ^{[4
]}

Stewart, Margaret K. ^{[1
]}

Zhao, Zeng ^{[2
]}

Dominguez, Gerardo ^{[5
]}

Thiemens, Mark ^{[4
]}

Fogler, Michael M. ^{[1
]}

Tauber, Michael J. ^{[4
]}

Castro-Neto, Antonio H. ^{[6
,7
]}

Lau, Chun Ning ^{[2
]}

Keilmann, Fritz ^{[8
,9
]}

Basov, Dimitri N. ^{[1
]}

机构：

[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

[2] Univ Calif Riverside, Dept Phys & Astron, Riverside, CA 92521 USA

[3] Boston Univ, Dept Phys, Boston, MA 02215 USA

[4] Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA 92093 USA

[5] Calif State Univ, Dept Phys, San Marcos, CA 92096 USA

[6] Natl Univ Singapore, Graphene Res Ctr, Singapore 117542, Singapore

[7] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore

[8] Max Planck Inst Quantum Opt, D-85714 Garching, Germany

[9] Ctr NanoSci, D-85714 Garching, Germany

来源：

NANO LETTERS | 2011年 / 11卷 / 11期

关键词：

Graphene; Dirac plasmon; infrared nanoscopy; near-field microscopy;

D O I：

10.1021/nl202362d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report on infrared (IR) nanoscopy of 2D plasmon excitations of Dirac fermions in graphene. This is achieved by confining mid-IR radiation at the apex of a nanoscale tip: an approach yielding 2 orders of magnitude increase in the value of in-plane component of incident wavevector q compared to free space propagation. At these high wavevectors, the Dirac plasmon is found to dramatically enhance the near-field interaction with mid-IR surface phonons of SiO2 substrate. Our data augmented by detailed modeling establish graphene as a new medium supporting plasmonic effects that can be controlled by gate voltage.

引用

页码：4701 / 4705

页数：5

共 37 条

[1] Substrate-enhanced infrared near-field spectroscopy [J].

Aizpurua, Javier ;

Taubner, Thomas ;

Javier Garcia de Abajo, F. ;

Brehm, Markus ;

Hillenbrand, Rainer .

OPTICS EXPRESS, 2008, 16 (03) :1529-1545

[2] Broadband-infrared assessment of phonon resonance in scattering-type near-field microscopy [J].

Amarie, S. ;

Keilmann, F. .

PHYSICAL REVIEW B, 2011, 83 (04)

[3] The promise of plasmonics [J].

Atwater, Harry A. .

SCIENTIFIC AMERICAN, 2007, 296 (04) :56-63

[4] Electrodynamics of correlated electron materials [J].

Basov, D. N. ;

Averitt, Richard D. ;

van der Marel, Dirk ;

Dressel, Martin ;

Haule, Kristjan .

REVIEWS OF MODERN PHYSICS, 2011, 83 (02) :471-541

[5] Probing the Intrinsic Properties of Exfoliated Graphene: Raman Spectroscopy of Free-Standing Monolayers [J].

Berciaud, Stephane ;

Ryu, Sunmin ;

Brus, Louis E. ;

Heinz, Tony F. .

NANO LETTERS, 2009, 9 (01) :346-352

[6]

Bonaccorso F, 2010, NAT PHOTONICS, V4, P611, DOI [10.1038/nphoton.2010.186, 10.1038/NPHOTON.2010.186]

[7] Analytical model for quantitative prediction of material contrasts in scattering-type near-field optical microscopy [J].

Cvitkovic, A. ;

Ocelic, N. ;

Hillenbrand, R. .

OPTICS EXPRESS, 2007, 15 (14) :8550-8565

[8] Energy band-gap engineering of graphene nanoribbons [J].

Han, Melinda Y. ;

Oezyilmaz, Barbaros ;

Zhang, Yuanbo ;

Kim, Philip .

PHYSICAL REVIEW LETTERS, 2007, 98 (20)

[9] Complex optical constants on a subwavelength scale [J].

Hillenbrand, R ;

Keilmann, F .

PHYSICAL REVIEW LETTERS, 2000, 85 (14) :3029-3032

[10] Coherent imaging of nanoscale plasmon patterns with a carbon nanotube optical probe [J].

Hillenbrand, R ;

Keilmann, F ;

Hanarp, P ;

Sutherland, DS ;

Aizpurua, J .

APPLIED PHYSICS LETTERS, 2003, 83 (02) :368-370

← 1 2 3 4 →