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Results for “Photoelectron spectroscopy”
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Time-Resolved X-ray Photoelectron Spectroscopy: Ultrafast Dynamics in CS 2 Probed at the S 2p Edge
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Isothermal Reduction of IrO2(110) Films by Methane Investigated Using In Situ X-ray Photoelectron Spectroscopy
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Coherent multidimensional photoelectron spectroscopy of ultrafast quasiparticle dressing by light
Abstract Depending on the applied strength, electromagnetic fields in electronic materials can induce dipole transitions between eigenstates or distort the Coulomb potentials that define them. Between the two regimes, they can also modify the electronic properties in more subtle ways when electron motion becomes governed by time and space-periodic potentials. The optical field introduces new virtual bands through Floquet engineering that under resonant conditions interacts strongly with the preexisting bands. Under such conditions the virtual bands can become real, and real ones become virtual as the optical fields and electronic band dispersions entangle the electronic response. We reveal optical dressing of electronic bands in a metal by exciting four-photon photoemission from the Cu(111) surface involving a three-photon resonant transition from the Shockley surface band to the first image potential band. Attosecond resolved interferometric scanning between identical pump–probe pulses and its Fourier analysis reveal how the optical field modifies the electronic properties of a solid through combined action of dipole excitation and field dressing.
High-throughput evaluation of half-metallicity of Co 2 MnSi Heusler alloys using composition-spread films and spin-integrated hard X-ray photoelectron spectroscopy
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Spectroscopic and Structural Probing of Excited-State Molecular Dynamics with Time-Resolved Photoelectron Spectroscopy and Ultrafast Electron Diffraction
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Scandium function in "scandate" thermionic cathodes: A microspot synchrotron radiation x-ray photoelectron spectroscopy study of co-adsorbed Ba-Sc-O on W(100)
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Hydrogen, H2(g), by near-ambient-pressure soft x-ray synchrotron-radiation photoelectron spectroscopy
In this article, we show the survey and H 1s spectra acquired with a photon energy of 400.02 eV and H2(g) electron-energy loss of Ag 3d5/2 spectra with a photon energy of 451.3 eV using high-resolution synchrotron-radiation NAP-XPS.
Copper Dissolution in Overdischarged Lithium-ion Cells: X-ray Photoelectron Spectroscopy and X-ray Absorption Fine Structure Analysis
Abstract not provided
SURFACE COMPOSITION STUDIES OF CDZNTE MATERIAL USING X-RAY PHOTOELECTRON SPECTROSCOPY
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Ultrafast Dynamics of Molecules on Surfaces Studied with Time-Resolved XUV Photoelectron Spectroscopy (Final Report)
In this project we set out to make technical advances in time-resolved photoemission from surfaces and study molecule-surface charge transfer processes. Combining a novel light source developed at Stony Brook with a new type of time-of-flight photoemission electron microscope (TOF k-mic) developed in Mainz, Germany, we achieved the former goal. Our light source, based on cavity-enhanced high harmonic generation at 61 MHz repetition rate, enables ultrafast time-resolved photoemission experiments to be conducted with orders of magnitude higher photocurrents than otherwise possible. Critically, this provides the high dynamic range necessary to study perturbatively excited samples, such that one can study the intrinsic dynamics of electrons and holes as they would occur in a device. Combining our light source with the TOF k-mic, we’ve achieved an overall improvement in data rate of time- and angle-resolved photoemission (tr-ARPES) of approximately four orders of magnitude over the previous state-of-the-art using kHz-repetition rate sources and conventional hemispherical electron analyzers. This new instrument is now being used in experiments on 2D materials and organic semiconductors.
High Energy X-ray Photoelectron Spectroscopy of COTS Electronics Interfacial Failure Modes.
Abstract not provided.
Photoelectron spectroscopy of the rare gases.
Ne, Ar, Kr and Xe photoionization cross sections determined by measuring ejected electron kinetic energies with spherical retarding potential analyzer
An X-ray photoelectron spectroscopy study of nickel and nickel-base alloy surface alterations in simulated hot corrosion conditions with emphasis on eventual application to turbine blade corrosion
The spectra of the pure metals tested and their oxides were used to analyze the patterns obtained for various superalloys. The quantitative results for two superalloys revealed differences between the surface compositions and their behavior under different conditions of oxidation. The following results occurred during the hot corrosion of samples in the presence of Na2So4: a lack of Ti migration; strong effects on Cr; and, a higher speed of alteration of superalloys.