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Photoemission spectroscopy

About: Photoemission spectroscopy is a research topic. Over the lifetime, 10821 publications have been published within this topic receiving 250888 citations. The topic is also known as: photoelectron spectroscopy & PES.


Papers
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Journal ArticleDOI
TL;DR: In this article, the O 1s photoelectron spectrum of water was recorded with the resolution high enough to resolve the vibrational structure of the O1s −1 state and the lifetime width and the Franck-Condon (FC) factors.

111 citations

Journal ArticleDOI
TL;DR: The binding energy of the peaks of Fe 2+ spectra are all located at binding energy 708·5 eV, and the width of the spectrum seems to be dependent on crystallinity.

111 citations

Journal ArticleDOI
TL;DR: In this article, the dependence of the degree of electron correlation in SrRuO3 on stoichiometry using transport and photoemission experiments was investigated. But the dependence on electron correlation was not investigated.
Abstract: We have grown and studied high quality SrRuO3 films grown by molecular beam epitaxy as well as pulsed laser deposition. By changing the oxygen activity during deposition, we were able to make SrRuO3 samples that were stoichiometric (low oxygen activity) or with ruthenium vacancies (high oxygen activity). This ability to control the ruthenium stoichiometry has permitted us to make a systematic study of the dependence of the degree of electron correlation in SrRuO3 on stoichiometry using transport and photoemission experiments. We have compared the measured ultraviolet photoemission spectroscopy spectra with calculated density of states spectra and offer explanations for the large observed differences between the two.

111 citations

Journal ArticleDOI
TL;DR: In this paper, high-resolution x-ray photoelectron spectroscopy (XPS) was used to study the chemical nature and physical distribution of N in oxynitride films formed by rapid thermal N2O processes (RTPs).
Abstract: High‐resolution x‐ray photoelectron spectroscopy (XPS) was used to study the chemical nature and physical distribution of N in oxynitride films formed by rapid thermal N2O processes (RTPs). High‐resolution synchrotron Si 2p core level photoemission spectroscopy (PES) was used to study the oxide/Si(100) interface suboxide structures with and without the presence of N. XPS N 1s studies indicated that there are two types of N in the RTP oxynitride films. The chemical bond configuration of the first type of N is similar to that N in Si3N4 and is mainly distributed within the first 1 nm from the interface. The second type of N is distributed mainly outside of the first 1 nm region, and the N is likely bonded to two Si and one oxygen atom. PES studies showed that Si formed suboxides with oxygen at the interface for all oxynitride films. It is found that there is no change in the Si+1 structure while there is a dramatic intensity decrease in the Si+2 and Si+3 peaks with the inclusion of N in the oxide. Both the ...

111 citations

Journal ArticleDOI
TL;DR: These results represent the first band-resolved evidence of the A(1g) phonon mode coupling to the surface state in a topological insulator.
Abstract: We report time- and angle-resolved photoemission spectroscopy measurements on the topological insulator Bi(2)Se(3). We observe oscillatory modulations of the electronic structure of both the bulk and surface states at a frequency of 2.23 THz due to coherent excitation of an A(1g) phonon mode. A distinct, additional frequency of 2.05 THz is observed in the surface state only. The lower phonon frequency at the surface is attributed to the termination of the crystal and thus reduction of interlayer van der Waals forces, which serve as restorative forces for out-of-plane lattice distortions. Density functional theory calculations quantitatively reproduce the magnitude of the surface phonon softening. These results represent the first band-resolved evidence of the A(1g) phonon mode coupling to the surface state in a topological insulator.

111 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023128
2022262
2021227
2020281
2019247
2018263