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Photoemission spectroscopy

About: Photoemission spectroscopy is a(n) research topic. Over the lifetime, 10821 publication(s) have been published within this topic receiving 250888 citation(s). The topic is also known as: photoelectron spectroscopy & PES.

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Journal ArticleDOI
TL;DR: The generalization of the local-density-approximation method for the systems with strong Coulomb correlations is proposed, which restores the discontinuity in the one-electron potential as in the exact density functional.
Abstract: The generalization of the local-density-approximation method for the systems with strong Coulomb correlations is proposed, which restores the discontinuity in the one-electron potential as in the exact density functional. The method is based on the model-Hamiltonian approach and allows us to take into account the nonsphericity of the Coulomb and exchange interactions. The calculation scheme could be regarded as a first-principle method due to the absence of adjustable parameters. The method was applied to the calculation of the photoemission (x-ray photoemission spectroscopy) and bremsstrahlung isochromat spectra of NiO.

1,642 citations

01 Jan 1995
TL;DR: In this paper, the three low-index faces of a Face-Centered Cubic (fcc) Crystal Face were modeled as 3D cubic faces, and a table of binding energies was presented.
Abstract: 1. Introduction and Basic Principles.- 2. Core Levels and Final States.- 3. Charge-Excitation Final States: Satellites.- 4. Continuous Satellites and Plasmon Satellites: XPS Photoemission in Nearly Free Electron Systems.- 5. Valence Orbitals in Simple Molecules and Insulating Solids.- 6. Photoemission of Valence Electrons from Metallic Solids in the One-Electron Approximation.- 7. Band Structure and Angular-Resolved Photoelectron Spectra.- 8. Surface States, Surface Effects.- 9. Inverse Photoelectron Spectroscopy.- 10. Spin-Polarized Photoelectron Spectroscopy.- 11. Photoelectron Diffraction.- A.1 Table of Binding Energies.- A.2 Surface and Bulk Brillouin Zones of the Three Low-Index Faces of a Face-Centered Cubic (fcc) Crystal Face.- A.3 Compilation of Work Functions.- References.

1,233 citations

Journal ArticleDOI
TL;DR: The first direct observation of the transition from indirect to direct bandgap in monolayer samples is reported by using angle-resolved photoemission spectroscopy on high-quality thin films of MoSe2 with variable thickness, grown by molecular beam epitaxy.
Abstract: The transition from an indirect to direct bandgap in transition metal dichalcogenides has been observed in samples with thicknesses ranging from 8 to 1 monolayers by angle-resolved photoemission spectroscopy.

1,010 citations

Reference BookDOI
10 Mar 2008
TL;DR: In this article, a detailed overview of core level spectroscopies can be found, including XPS and XAS spectra, as well as a comparison of the two spectra with single electron excitation models.
Abstract: INTRODUCTION FUNDAMENTAL ASPECTS OF CORE LEVEL SPECTROSCOPIES Core holes Overview of core level spectroscopies Interaction of x-rays with matter Optical transition operators and x-ray absorption spectrum The interaction of electrons with matter X-ray sources Electron sources MANY-BODY CHARGE-TRANSFER EFFECTS IN XPS AND XAS Introduction Many-body charge-transfer effects in XPS General expressions of many-body effects General effects in XPS spectra Typical examples of XPS spectra Many-body charge-transfer effects in XAS Comparison of XPS and XAS CHARGE TRANSFER MULTIPLET THEORY Atomic multiplet theory Ligand field multiplet theory The charge transfer multiplet theory X-RAY PHOTOEMISSION SPECTROSCOPY Introduction Experimental aspects XPS of TM compounds XPS of RE compounds Resonant photoemission spectroscopy Hard XPS Resonant inverse photoemission spectroscopy Nonlocal screening effect in XPS Auger photoemission coincidence spectroscopy Spin polarization and magnetic dichroism in XPS X-RAY ABSORPTION SPECTROSCOPY Basics of XAS Experimental aspects The L2, 3 edges of 3d TM systems Other x-ray absorption spectra of the 3d TM systems X-ray absorption spectra of the 4d and 5d TM systems X-ray absorption spectra of the 4f RE and 5f actinide systems X-RAY MAGNETIC CIRCULAR DICHROISM Introduction XMCD effects in the L2, 3 edges of TM ions and compounds Sum rules XMCD effects in the K edges of transition metals XMCD effects in the M edges of rare earths XMCD effects in the L edges of rare earth systems Applications of XMCD RESONANT X-RAY EMISSION SPECTROSCOPY Introduction Rare earth compounds High Tc Cuprates and related materials Nickel and Cobalt compounds Iron and Manganese compounds Early transition metal compounds Electron spin states detected by RXES and NXES MCD in RXES of ferromagnetic systems APPENDICES Precise derivation of XPS formula Derivation of Eq. (88) in Chapter 3 Fundamental tensor theory Derivation of the orbital moment sum rule Theoretical test of the spin sum rule Calculations of XAS spectra with single electron excitation models REFERENCES INDEX

922 citations

Journal ArticleDOI
TL;DR: These three different near-surface compositions (Pt-skin, Pt-skeleton, and pure polycrystalline Pt) all having pure-Pt outermost layers are found to have different electronic structures, which originates from different arrangements of subsurface atoms of the alloying component.
Abstract: The surface properties of PtM (M = Co, Ni, Fe) polycrystalline alloys are studied by utilizing Auger electron spectroscopy, low energy ion scattering spectroscopy, and ultraviolet photoemission spectroscopy. For each alloy initial surface characterization was done in an ultrahigh vacuum (UHV) system, and depending on preparation procedure it was possible to form surfaces with two different compositions. Due to surface segregation thermodynamics, annealed alloy surfaces form the outermost Pt-skin surface layer, which consists only platinum atoms, while the sputtered surfaces have the bulk ratio of alloying components. The measured valence band density of state spectra clearly shows the differences in electronic structures between Pt-skin and sputtered surfaces. Well-defined surfaces were hereafter transferred out from UHV and exposed to the acidic (electro)chemical environment. The electrochemical and post-electrochemical UHV surface characterizations revealed that Pt-skin surfaces are stable during and af...

838 citations

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