STM/STS and photoemission study of Ag thin films on Ga/Si(111) (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:mrow><mml:msqrt><mml:mn>3</mml:mn></mml:msqrt><mml:mo>×</mml:mo><mml:msqrt><mml:mn>3</mml:mn></mml:msqrt></mml:mrow></mml:math>)R30°

Starfelt, Samuel; Johansson, Lars; Zhang, Hanmin

doi:10.1016/j.susc.2018.12.009

Cited by 11 publications

(3 citation statements)

References 35 publications

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“…The number of such states depends on the number of atomic layers in the film. Thin-film QWSs can be directly observed by photoemission, inverse photoemission, and two-photon photoemission [ 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ], as well as by scanning tunneling microscopy/spectroscopy (STM/STS) [ 13 , 14 , 15 ] experiments.…”

Section: Introductionmentioning

confidence: 99%

Quantum-Size Effects in Ultra-Thin Gold Films on Pt(111) Surface

Koroteev,

Silkin,

Silkin

et al. 2023

Materials

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We calculate, within the density-functional theory, the atomic and electronic structure of the clean Pt(111) and Au(111) surfaces and the nML-Au/Pt(111) systems with n varying from one to three. The effect of the spin–orbital interaction was taken into account. Several new electronic states with strong localization in the surface region were found and discussed in the case of clean surfaces. The Au adlayers introduce numerous quantum well states in the energy regions corresponding to the projected bulk band continuum of Au(111). Moreover, the presence of states resembling the true Au(111) surface states can be detected at n = 2 and 3. The Au/Pd interface states are found as well. In nML-Au/Pt(111), the calculated work function presents a small variation with a variation of the number of the Au atomic layer. Nevertheless, the effect is significantly smaller in comparison to the s-p metals.

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Section: Introductionmentioning

confidence: 99%

Quantum-Size Effects in Ultra-Thin Gold Films on Pt(111) Surface

Koroteev,

Silkin,

Silkin

et al. 2023

Materials

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“…В свою очередь, скорость диффузии в значительной степени определяется наличием тех или иных дефектов в объёме или на поверхности наночастиц [7,8]. Дефекты в наночастицах, влияние поверхности, границ зёрен, подложки так или иначе проявляется в электронной структуре наночастиц [9], которая, в свою очередь, проявляется в их оптических свойствах.…”

Section: Introductionunclassified

Оптические Свойства Серебряных Наночастиц, Обусловленные Их Структурными Дефектами

Леонов¹

2022

Оптика И Спектроскопия

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Исследована связь дефектов островковых серебряных плёнок, создаваемых методом термического напыления, с их оптическими свойствами. Изучено влияние дефектов в наночастицах на фотоэффект. Излучение с длиной волны 355 nm (энергия кванта 3.5 eV) вызывает однофотонный фотоэффект, тогда как работа выхода массивного серебра не ниже 4.2 eV. Высказана гипотеза о связи дефектов в наночастицах с их спектрами поглощения. В процессе напыления на спектрах экстинкции серебряной островковой плёнки возникает пик поглощения на длине волны 370 nm, который исчезает в течение нескольких десятков минут после окончания напыления. Также показано, что дефекты в островках можно создавать искусственно, облучая их ультрафиолетовым светом, что приводит к увеличению скорости самодиффузии в этих островках при нагреве. Ключевые слова: наночастицы, дефекты, диффузия, спектры экстинкции.

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“…In its turn the diffusion rate is largely determined by the presence of certain defects in the volume or on the surface of nanoparticles [7,8]. Defects in nanoparticles, the influence of the surface, grain boundaries, substrate, one way or another manifests itself in the electronic structure of nanoparticles [9], which, in their turn, manifests itself in their optical properties.…”

Section: Introductionmentioning

confidence: 99%

Optical properties of silver nanoparticles based on their structural defects

Леонов

2022

Optics and Spectroscopy

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The relation between the defects in island silver films produced by thermal spraying and their optical properties has been studied. The effect of defects in nanoparticles on the photo effect has been studied. Radiation with a wavelength of 355 nm (quantum energy 3.5 eV) causes a single-photon photo effect, while the work function of bulk silver is not lower than 4.2 eV. A hypothesis was put forward about the relation between defects in nanoparticles and their absorption spectra. In the process of deposition an absorption peak appears on the extinction spectra of a silver island film at a wavelength of 370 nm, which disappears within several tens of minutes after the end of deposition. It was also shown, that the defects in islands can be created artificially by irradiating them with ultraviolet light, that leads to an increase in the rate of self-diffusion in these islands upon heating. Key words: nanoparticles, defects, diffusion, extinction spectra.

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STM/STS and photoemission study of Ag thin films on Ga/Si(111) (3×3)R30°

Cited by 11 publications

References 35 publications

Quantum-Size Effects in Ultra-Thin Gold Films on Pt(111) Surface

Quantum-Size Effects in Ultra-Thin Gold Films on Pt(111) Surface

Оптические Свойства Серебряных Наночастиц, Обусловленные Их Структурными Дефектами

Optical properties of silver nanoparticles based on their structural defects

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