Size-dependent nonlocal effects in plasmonic semiconductor particles

Localized surface plasmons (LSP) in semiconductor particles are expected to exhibit spatial nonlocal response effects as the geometry enters the nanometer scale. To investigate these nonlocal effects, we apply the hydrodynamic model to nanospheres of two different semiconductor materials: intrinsic...

Full description

Saved in:
Bibliographic Details
Published in:Europhysics letters 2017-07, Vol.119 (1), p.17003
Main Authors: Maack, J. R., Mortensen, N. A., Wubs, M.
Format: Article
Language:English
Subjects:
73.20.Mf
78.20.Bh
78.30.Fs
Blue shift
Indium antimonide
Intermetallic compounds
Metal particles
Nanospheres
Plasmons
Semiconductor materials
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Localized surface plasmons (LSP) in semiconductor particles are expected to exhibit spatial nonlocal response effects as the geometry enters the nanometer scale. To investigate these nonlocal effects, we apply the hydrodynamic model to nanospheres of two different semiconductor materials: intrinsic InSb and n-doped GaAs. Our results show that the semiconductors indeed display nonlocal effects, and that these effects are even more pronounced than in metals. In a 150 nm InSb particle at 300 K, the LSP frequency is blueshifted 35%, which is orders of magnitude larger than the blueshift in a metal particle of the same size. This property, together with their tunability, makes semiconductors a promising platform for experiments in nonlocal effects.
ISSN:0295-5075
1286-4854
DOI:10.1209/0295-5075/119/17003