Quantum-well states in thin Ag films grown on the Ga/Si(111)-
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 surface

Starfelt, Samuel; Zhang, Hanmin; Johansson, Lars

doi:10.1103/physrevb.97.195430

Cited by 14 publications

(4 citation statements)

References 35 publications

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“…Following a two-step process (i.e., deposition at low temperature ∼ 100 K followed by annealing to 300 K), we find the lowest thickness needed to produce atomically flat films using this procedure to be 6 ML. Nevertheless, 2ML Ag(111) films have been recently reported by employing a Ga/Si buffer layer [54], showing rather flat surfaces and well-defined quantum-well states [55]. In our films, the crystalline quality of the fabricated Ag(111) films, which exhibit a clean electronic band structure consisting of quantized QWs, combined with the crystalline quality of the substrate, permit ruling out inelastic electron-and plasmon-scattering due to imperfections.…”

Section: Discussionmentioning

confidence: 81%

Plasmonics in Atomically Thin Crystalline Silver Films

et al. 2019

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Light-matter interaction at the atomic scale rules fundamental phenomena such as photoemission and lasing, while enabling basic everyday technologies, including photovoltaics and optical communications. In this context, plasmons -the collective electron oscillations in conducting materials-are important because they allow manipulating optical fields at the nanoscale. The advent of graphene and other two-dimensional crystals has pushed plasmons down to genuinely atomic dimensions, displaying appealing properties such as a large electrical tunability. However, plasmons in these materials are either too broad or lying at low frequencies, well below the technologically relevant nearinfrared regime. Here we demonstrate sharp near-infrared plasmons in lithographically-patterned wafer-scale atomically-thin silver crystalline films. Our measured optical spectra reveal narrow plasmons (quality factor ∼ 4), further supported by a low sheet resistance comparable to bulk metal in few-atomic-layer silver films down to seven Ag(111) monolayers. Good crystal quality and plasmon narrowness are obtained despite the addition of a thin passivating dielectric, which renders our samples resilient to ambient conditions. The observation of spectrally sharp and strongly confined plasmons in atomically thin silver holds great potential for electro-optical modulation and optical sensing applications. * These two authors contributed equally to the work. † Electronic address: enrique.ortega@ehu.es ‡ Electronic address: javier.garciadeabajo@icfo.es arXiv:1901.07739v2 [cond-mat.mes-hall]

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Section: Discussionmentioning

confidence: 81%

Plasmonics in Atomically Thin Crystalline Silver Films

et al. 2019

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“…[15][16][17][18][19] Over the past decades, countless efforts have been invested in generating different types QWSs devices and improving their qualities. The QWSs are generally obtained in thin film structure especially in metallic thin films (such as Bi, 20,21 Pb, 22,23 Ag, 24 Cu, 25 Fe, 26 etc. ), transition metal dichalcogenides/oxides films such as MoS2 27,28 and SrVO3 29 as well as in thin-film heterostructures (i.e., SrTiO3/LaAlO3 30 ).…”

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confidence: 99%

Direct Visualization and Manipulation of Tunable Quantum Well State in Semiconducting Nb₂SiTe₄

et al. 2021

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“…-Sn leads to the formation of ordered Ag films at room temperature, and their thickness may be less than 5 ML [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Ag and Pb diffusion on Ge(111)-3x2sqrt(3)sqrtSn surface

2023

Physics of the Solid State

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Ag and Pb diffusion on Ge(111)-3x2sqrt(3)sqrtSn surface has been studied by Auger electron spectroscopy and low energy electron diffraction. The mechanism of diffusion of atoms of these elements along the Ge(111)-3x2sqrt(3)sqrtSn surface is determined, and the temperature dependences of the diffusion coefficients are measured. The diffusion parameters of Ag along the Ge(111)-3x2sqrt(3)sqrtSn and Si(111)-2sqrt(3)sqrtSn surfaces are compared. Keywords: surface, surface diffusion, Ge(111), Ag, Pb, Sn.

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Quantum-well states in thin Ag films grown on the Ga/Si(111)- 3×3 surface

Cited by 14 publications

References 35 publications

Plasmonics in Atomically Thin Crystalline Silver Films

Plasmonics in Atomically Thin Crystalline Silver Films

Direct Visualization and Manipulation of Tunable Quantum Well State in Semiconducting Nb₂SiTe₄

Ag and Pb diffusion on Ge(111)-3x2sqrt(3)sqrtSn surface

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Quantum-well states in thin Ag films grown on the Ga/Si(111)- 3×3 surface

Cited by 14 publications

References 35 publications

Plasmonics in Atomically Thin Crystalline Silver Films

Plasmonics in Atomically Thin Crystalline Silver Films

Direct Visualization and Manipulation of Tunable Quantum Well State in Semiconducting Nb2SiTe4

Ag and Pb diffusion on Ge(111)-3x2sqrt(3)sqrtSn surface

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Direct Visualization and Manipulation of Tunable Quantum Well State in Semiconducting Nb₂SiTe₄