Imperial College London

Peter Haynes

Faculty of EngineeringDepartment of Materials

Head of Department of Materials



+44 (0)20 7594 5158p.haynes Website CV




Miss Catherine Graham +44 (0)20 7594 3330




201BRoyal School of MinesSouth Kensington Campus






BibTex format

author = {Siroki, G and Lee, DKK and Haynes, PD and Giannini, V},
doi = {10.1038/ncomms12375},
journal = {Nature Communications},
title = {Single-electron induced surface plasmons on a topological nanoparticle},
url = {},
volume = {7},
year = {2016}

RIS format (EndNote, RefMan)

AB - It is rarely the case that a single electron affects the behaviour of several hundred thousands of atoms. Here we demonstrate a phenomenon where this happens. The key role is played by topological insulators—materials that have surface states protected by time-reversal symmetry. Such states are delocalized over the surface and are immune to its imperfections in contrast to ordinary insulators. For topological insulators, the effects of these surface states will be more strongly pronounced in the case of nanoparticles. Here we show that under the influence of light a single electron in a topologically protected surface state creates a surface charge density similar to a plasmon in a metallic nanoparticle. Such an electron can act as a screening layer, which suppresses absorption inside the particle. In addition, it can couple phonons and light, giving rise to a previously unreported topological particle polariton mode. These effects may be useful in the areas of plasmonics, cavity electrodynamics and quantum information.
AU - Siroki,G
AU - Lee,DKK
AU - Haynes,PD
AU - Giannini,V
DO - 10.1038/ncomms12375
PY - 2016///
SN - 2041-1723
TI - Single-electron induced surface plasmons on a topological nanoparticle
T2 - Nature Communications
UR -
UR -
VL - 7
ER -