Plasma resonance of binary amorphous and crystalline Al-transition metal alloys: Experiments and ab initio calculations

Stiehler, M.; Kaltenborn, Steffen; Gillani, S.S.A.; Pudwell, P.; Schneider, Hans Christian; Häußler, P.

doi:10.1016/j.elspec.2015.02.005

Cited by 2 publications

(2 citation statements)

References 40 publications

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“…Indeed, recent studies of alloy plasmons illustrate the potential contributions of EELS characterization. ,,,− Ringe et al investigated Au–Pd octopods, suggesting that Au alloys containing a poor plasmonic metal (Pd) can still sustain localized LSPRs. Tran et al examined nonuniform Au–Pd nanoparticles obtained from a microbial synthesis and observed a significant difference when placing the electron beam at Au-rich and Pd-rich regions within a single nanoparticle.…”

Section: Probing Surface Plasmons With Stem/eelsmentioning

confidence: 99%

Probing Nanoparticle Plasmons with Electron Energy Loss Spectroscopy

2017

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Electron energy loss spectroscopy (EELS) performed in a scanning transmission electron microscope (STEM) has demonstrated unprecedented power in the characterization of surface plasmons. The subangstrom spatial resolution achieved in EELS and its capability of exciting the full set of localized surface plasmon resonance (LSPR) modes supported by a metallic nanostructure makes STEM/EELS an ideal tool in the study of LSPRs. The plasmonic properties characterized using EELS can be associated with geometric or structural features collected simultaneously in a STEM to achieve a deeper understanding of the plasmonic response. In this review, we provide the reader a thorough experimental description of EELS as a LSPR characterization tool and summarize the exciting recent progress in the field of STEM/EELS plasmon characterization.

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Section: Probing Surface Plasmons With Stem/eelsmentioning

confidence: 99%

Probing Nanoparticle Plasmons with Electron Energy Loss Spectroscopy

2017

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“…In response, here, we present a comprehensive library of DFs obtained by first‐principles calculations based on linear‐response time‐dependent density‐functional theory (LR‐TDDFT) [ 26 ] for ten binary alloys composed of the late non‐magnetic transition elements Pd, Pt, Cu, Ag, and Au ( Figure a,b). This approach, which has previously been applied primarily to monoelemental systems, [ 27 ] compounds with small unit cells, [ 28 ] semiconductor alloys, [ 29 ] and hydrogenated Pd, [ 30,31 ] directly yields the DF over the full spectral range. Although LR‐TDDFT is not exact, with the most important approximations pertaining to the exchange‐correlation functional, it enables efficient and systematic screening of different alloys and compositions and is thus well suited for building a self‐consistent library of DFs.…”

Section: Introductionmentioning

confidence: 99%

A Library of Late Transition Metal Alloy Dielectric Functions for Nanophotonic Applications

Rahm

Tiburski

Rossi

et al. 2020

Adv Funct Materials

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Accurate complex dielectric functions are critical to accelerate the development of rationally designed metal alloy systems for nanophotonic applications, and to thereby unlock the potential of alloying for tailoring nanostructure optical properties. To date, however, accurate alloy dielectric functions are widely lacking. Here, a time‐dependent density‐functional theory computational framework is employed to compute a comprehensive binary alloy dielectric function library for the late transition metals most commonly employed in plasmonics (Ag, Au, Cu, Pd, Pt). Excellent agreement is found between electrodynamic simulations based on these dielectric functions and selected alloy systems experimentally scrutinized in 10 at% composition intervals. Furthermore, it is demonstrated that the dielectric functions can vary in very non‐linear fashion with composition, which paves the way for non‐trivial optical response optimization by tailoring material composition. The presented dielectric function library is thus a key resource for the development of alloy nanomaterials for applications in nanophotonics, optical sensors, and photocatalysis.

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Plasma resonance of binary amorphous and crystalline Al-transition metal alloys: Experiments and ab initio calculations

Cited by 2 publications

References 40 publications

Probing Nanoparticle Plasmons with Electron Energy Loss Spectroscopy

Probing Nanoparticle Plasmons with Electron Energy Loss Spectroscopy

A Library of Late Transition Metal Alloy Dielectric Functions for Nanophotonic Applications

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