Tunable and low-loss correlated plasmons in Mott-like insulating oxides

Nature Communications
Teguh Citra AsmaraAndrivo Rusydi

Abstract

Plasmonics has attracted tremendous interests for its ability to confine light into subwavelength dimensions, creating novel devices with unprecedented functionalities. New plasmonic materials are actively being searched, especially those with tunable plasmons and low loss in the visible-ultraviolet range. Such plasmons commonly occur in metals, but many metals have high plasmonic loss in the optical range, a main issue in current plasmonic research. Here, we discover an anomalous form of tunable correlated plasmons in a Mott-like insulating oxide from the Sr1-xNb1-yO3+δ family. These correlated plasmons have multiple plasmon frequencies and low loss in the visible-ultraviolet range. Supported by theoretical calculations, these plasmons arise from the nanometre-spaced confinement of extra oxygen planes that enhances the unscreened Coulomb interactions among charges. The correlated plasmons are tunable: they diminish as extra oxygen plane density or film thickness decreases. Our results open a path for plasmonics research in previously untapped insulating and strongly-correlated materials.

References

Oct 15, 1996·Physical Review. B, Condensed Matter·G Kresse, J Furthmüller
Feb 1, 1993·Physical Review. B, Condensed Matter·K IsawaH Yamauchi
Aug 1, 1993·Physical Review. B, Condensed Matter·M B MeindersG A Sawatzky
Aug 19, 1991·Physical Review Letters·H EskesG A Sawatzky
Oct 28, 1996·Physical Review Letters·J P PerdewM Ernzerhof
Dec 18, 2002·Physical Review Letters·C A KuntscherJ Mannhart
Aug 15, 2003·Nature·William L BarnesThomas W Ebbesen
May 1, 2012·Nature Materials·Xiaoxiang XuJohn T S Irvine
Mar 26, 2013·Nature Materials·A DienstA Cavalleri
Dec 30, 2014·Physical Review Letters·E G C P van LoonM I Katsnelson
Apr 4, 2015·Optics Express·Petr MarkovSharon M Weiss

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Citations

May 15, 2020·Optics Express·L Rodríguez de MarcosA Rusydi
Sep 16, 2021·Science Advances·Jong Mok OkHo Nyung Lee
Aug 3, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Aarushi KhandelwalAndrivo Rusydi

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Methods Mentioned

BETA
transmission electron microscopy
X-ray
surface plasmon resonance
free
electron scattering
free electron scattering
electron diffraction

Software Mentioned

SE
Woollam WVASE32
SIMNRA
PBE
Woollam CompleteEase
Vienna ab initio simulation

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