Atomically localized plasmon enhancement in monolayer graphene
Source abstract
Abstract
Plasmons in graphene can be tuned by using electrostatic gating or chemical doping, and the ability to confine plasmons in very small regions could have applications in optoelectronics, plasmonics and transformation optics. However, little is known about how atomic-scale defects influence the plasmonic properties of graphene. Moreover, the smallest localized plasmon resonance observed in any material to date has been limited to around 10 nm. Here, we show that surface plasmon resonances in graphene can be enhanced locally at the atomic scale. Using electron energy-loss spectrum imaging in an aberration-corrected scanning transmission electron microscope, we find that a single point defect can act as an atomic antenna in the petahertz (10(15) Hz) frequency range, leading to surface plasmon resonances at the subnanometre scale.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Plasmonic and Surface Plasmon Research · Graphene research and applications · Molecular Junctions and Nanostructures
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (30)
Show source-provided references
1. Geim, A. K. Graphene: status and prospects. Science 324, 1530–1534 (2009).10.1126/science.1158877 ↗
2. Abergel, D. S. L., Apalkov, V., Berashevich, J., Ziegler, K. & Chakraborty, T. Properties of graphene: a theoretical perspective. Adv. Phys. 59, 261–482 (2010).10.1080/00018732.2010.487978 ↗
3. Novoselov, K. S. et al. Electric field effect in atomically thin carbon films. Science 306, 666–669 (2004).10.1126/science.1102896 ↗
4. Berger, C. et al. Ultrathin epitaxial graphite: 2D electron gas properties and a route toward graphene-based nanoelectronics. J. Phys. Chem. B 108, 19912–19916 (2004).10.1021/jp040650f ↗
5. Mak, K. F. et al. Measurement of the optical conductivity of graphene. Phys. Rev. Lett. 101, 196405 (2008).10.1103/PhysRevLett.101.196405 ↗
6. Chen, C-F. et al. Controlling inelastic light scattering quantum pathways in graphene. Nature 471, 617–620 (2011).10.1038/nature09866 ↗
7. Wang, F. et al. Gate-variable optical transitions in graphene. Science 320, 206–209 (2008).10.1126/science.1152793 ↗
8. Liu, M. et al. A graphene-based broadband optical modulator. Nature 474, 64–67 (2011).10.1038/nature10067 ↗
9. Bonaccorso, F., Sun, Z., Hasan, T. & Ferrari, A. C. Graphene photonics and optoelectronics. Nature Photon. 4, 611–622 (2010).10.1038/nphoton.2010.186 ↗
10. Jablan, M., Buljan, H. & Soljacic, M. Plasmonics in graphene at infrared frequencies. Phys. Rev. B 80, 245435 (2009).10.1103/PhysRevB.80.245435 ↗
11. Mishchenko, E. G., Shytov, A. V. & Silvestrov, P. G. Guided plasmons in graphene p–n junctions. Phys. Rev. Lett. 104, 156806 (2010).10.1103/PhysRevLett.104.156806 ↗
12. Vakil, A. & Engheta, N. Transformation optics using graphene. Science 332, 1291–1294 (2011).10.1126/science.1202691 ↗
13. Maier, S. A. & Atwater, H. A. Plasmonics: localization and guiding of electromagnetic energy in metal/dielectric structures. J. Appl. Phys. 98, 011101 (2005).10.1063/1.1951057 ↗
14. Nelayah, J. et al. Mapping surface plasmons on a single metallic nanoparticle. Nature Phys. 3, 348–353 (2007).10.1038/nphys575 ↗
15. Bosman, M., Keast, V. J., Watanabe, M., Maaroof, A. I. & Cortie, M. B. Mapping surface plasmons at the nanometre scale with an electron beam. Nanotechnology 18, 165505 (2007).10.1088/0957-4484/18/16/165505 ↗
16. Theis, T. N. & Solomon, P. M. It's time to reinvent the transistor! Science 327, 1600–1601 (2010).10.1126/science.1187597 ↗
17. McAulay, A. D. Optical Computer Architectures: The Application of Optical Concepts to Next Generation Computers (Wiley, 1991).
18. Caulfield, H. J. & Dolev, S. Why future supercomputing requires optics. Nature Photon. 4, 261–263 (2010).10.1038/nphoton.2010.94 ↗
19. Barnes, W. L., Dereux, A. & Ebbesen, T. W. Surface plasmon subwavelength optics. Nature 424, 824–830 (2003).10.1038/nature01937 ↗
20. Ozbay, E. Plasmonics: merging photonics and electronics at nanoscale dimensions. Science 311, 189–193 (2006).10.1126/science.1114849 ↗
21. Stockman, M. I. Nanoplasmonics: the physics behind the applications. Phys. Today 64, 39–44 (2011).10.1063/1.3554315 ↗
22. Hunt, J. A. & Williams, D. B. Electron energy-loss spectrum-imaging. Ultramicroscopy 38, 47–73 (1991).10.1016/0304-3991(91)90108-I ↗
23. Krivanek, O. L. et al. Atom-by-atom structural and chemical analysis by annular dark-field electron microscopy. Nature 464, 571–574 (2010).10.1038/nature08879 ↗
24. Gass, M. H. et al. Free-standing graphene at atomic resolution. Nature Nanotech. 3, 676–681 (2008).10.1038/nnano.2008.280 ↗
25. Yang, L., Deslippe, J., Park, C-H., Cohen, M. L. & Louie, S. G. Excitonic effects on the optical response of graphene and bilayer graphene. Phys. Rev. Lett. 103, 186802 (2009).10.1103/PhysRevLett.103.186802 ↗
26. Yang, L. Excitons in intrinsic and bilayer graphene. Phys. Rev. B 83, 085405 (2011).10.1103/PhysRevB.83.085405 ↗
27. Muniz, R. A., Dahal, H. P., Balatsky, A. V. & Haas, S. Impurity-assisted nanoscale localization of plasmonic excitations in graphene. Phys. Rev. B 82, 081411 (2010).10.1103/PhysRevB.82.081411 ↗
28. Bostwick, A. et al. Observation of plasmarons in quasi-freestanding doped graphene. Science 328, 999–1002 (2010).10.1126/science.1186489 ↗
29. Koppens, F. H. L., Chang, D. E. & Javier Garcia de Abajo, F. Graphene plasmonics: a platform for strong light–matter interactions. Nano Lett. 11, 3370–3377 (2011).10.1021/nl201771h ↗
30. Crommie, M. F., Lutz, C. P. & Eigler, D. M. Confinement of electrons to quantum corrals on a metal surface. Science 262, 218–220 (1993).10.1126/science.262.5131.218 ↗