### Resumé

Originalsprog | Engelsk |
---|---|

Tidsskrift | Journal of Nanophotonics |

Vol/bind | 5 |

Sider (fra-til) | 051602 |

ISSN | 1934-2608 |

DOI | |

Status | Udgivet - 2011 |

Udgivet eksternt | Ja |

### Fingeraftryk

### Citer dette

*Journal of Nanophotonics*,

*5*, 051602. https://doi.org/10.1117/1.3574159

}

*Journal of Nanophotonics*, bind 5, s. 051602. https://doi.org/10.1117/1.3574159

**Field enhancement at metallic interfaces due to quantum confinement.** / Öztürk, Fatih; Xiao, Sanshui; Yan, Min; Wubs, Martijn; Jauho, Antti-Pekka; Mortensen, N. Asger.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

TY - JOUR

T1 - Field enhancement at metallic interfaces due to quantum confinement

AU - Öztürk, Fatih

AU - Xiao, Sanshui

AU - Yan, Min

AU - Wubs, Martijn

AU - Jauho, Antti-Pekka

AU - Mortensen, N. Asger

PY - 2011

Y1 - 2011

N2 - We point out an apparently overlooked consequence of the boundary conditions obeyed by the electric displacement vector at air-metal interfaces: the continuity of the normal component combined with the quantum mechanical penetration of the electron gas in the air implies the existence of a surface on which the dielectric function vanishes. This, in turn, leads to an enhancement of the normal component of the total electric field. We study this effect for a planar metal surface, with the inhomogeneous electron density accounted for by a Jellium model. We also illustrate the effect for equilateral triangular nanoislands via numerical solutions of the appropriate Maxwell equations, and show that the field enhancement is several orders of magnitude larger than what the conventional theory predicts. (C) 2011 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.3574159]

AB - We point out an apparently overlooked consequence of the boundary conditions obeyed by the electric displacement vector at air-metal interfaces: the continuity of the normal component combined with the quantum mechanical penetration of the electron gas in the air implies the existence of a surface on which the dielectric function vanishes. This, in turn, leads to an enhancement of the normal component of the total electric field. We study this effect for a planar metal surface, with the inhomogeneous electron density accounted for by a Jellium model. We also illustrate the effect for equilateral triangular nanoislands via numerical solutions of the appropriate Maxwell equations, and show that the field enhancement is several orders of magnitude larger than what the conventional theory predicts. (C) 2011 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.3574159]

U2 - 10.1117/1.3574159

DO - 10.1117/1.3574159

M3 - Journal article

VL - 5

SP - 051602

JO - Journal of Nanophotonics

JF - Journal of Nanophotonics

SN - 1934-2608

ER -