Quantum nonlocal effects in individual and interacting graphene nanoribbons

Iván Silveiro; Juan Manuel Plaza Ortega; F Javier García de Abajo

doi:10.1038/lsa.2015.14

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Quantum nonlocal effects in individual and interacting graphene nanoribbons

Original Articles

- Quantum nonlocal effects in individual and interacting graphene nanoribbons
- Quantum nonlocal effects in individual and interacting graphene nanoribbons
- LSA 2015年4卷第1期
- Affiliations：
  
  1.ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, 08860 Castelldefels (Barcelona), Spain
  2.ICREA-Institució Catalana de Recerca i Estudis Avançats, Passeig Lluís Companys 23, 08010 Barcelona, Spain
- Author bio：
  
  Professor FJ García de Abajo, ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, 08860 Castelldefels (Barcelona), SpainE-mail: javier.garciadeabajo@icfo.es
- Funds：
- DOI：10.1038/lsa.2015.14
  中图分类号：
- 纸质出版日期：2015-03，
  
  网络出版日期：2014-11-19，
  
  收稿日期：2014-08-13，
  
  修回日期：2014-11-11，
  
  录用日期：2014-11-13
- Accepted：
Scan QR Code
Quantum nonlocal effects in individual and interacting graphene nanoribbons[J]. LSA, 2015,4(1).

Silveiro, I., Ortega, J. M. P. & de Abajo, F. J. G. Quantum nonlocal effects in individual and interacting graphene nanoribbons. Light: Science & Applications, 4, e241 (2015).
Quantum nonlocal effects in individual and interacting graphene nanoribbons[J]. LSA, 2015,4(1). DOI： 10.1038/lsa.2015.14.

Silveiro, I., Ortega, J. M. P. & de Abajo, F. J. G. Quantum nonlocal effects in individual and interacting graphene nanoribbons. Light: Science & Applications, 4, e241 (2015). DOI： 10.1038/lsa.2015.14.

摘要

Abstract

We show that highly doped graphene ribbons can support surface plasmons at near-infrared frequencies when their width is in the nanometer range

leading to important nonlocal and finite quantum-size corrections

such as sizable blueshifts. The magnitude of these effects is assessed by comparing classical and quantum-mechanical models to describe graphene plasmons. More precisely

we examine individual and interacting 6–8 nm wide zigzag and armchair ribbons doped to 0.4–1.5 eV Fermi energies. We find a strong influence of nonlocal effects on the orientation of graphene edges

with plasmons in zigzag ribbons undergoing strong quenching when their energy is below the Fermi level. Nonlocality is also affecting the hybridization between ribbon plasmons in dimers and arrays for separations below a few nanometers. Remarkably

the removal of a single row of atomic bonds in a ribbon produces a strong plasmon frequency shift

whereas the removal of bonds along an array of rows separated by several nanometers in an extended sheet causes a dramatic increase in the absorption. Besides the fundamental interest of these results

our work supports the use of narrow ribbons to achieve electro-optical modulation in the near infrared.

关键词

Keywords

graphenegraphene plasmonsgraphene ribbonsmetamaterialsplasmonics

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