TEMPERATURE-DEPENDENT HIGH-RESOLUTION PHOTOEMISSION SPECTROSCOPY OF YbXCu4 (X=In, Cd, Mg)

2002 ◽  
Vol 09 (02) ◽  
pp. 1079-1083 ◽  
Author(s):  
H. SATO ◽  
Y. NISHIKAWA ◽  
F. NAGASAKI ◽  
H. FUJINO ◽  
Y. TAKEDA ◽  
...  
Keyword(s):  
High Resolution ◽  
Valence Band ◽  
Energy Resolution ◽  
High Energy ◽  
The Other ◽  
High Energy Resolution ◽  
Photoemission Spectroscopy ◽  
Temperature Dependent ◽  
Other Hand ◽  
Increasing Temperature

Valence-band and Yb 4d photoemission spectra of YbXCu 4 (X=In, Cd, Mg) have been measured with high energy resolution from 10 to 300 K. In the valence-band photoemission spectra of YbInCu 4 and YbCdCu 4, the structure due to the Yb 2+ 4f 7/2 states is clearly observed near the Fermi level (E F ) at 10 K. The intensity of the Yb 2+ 4f 7/2 structure decreases with increasing temperature and the structure almost disappears at 300 K. The amount of the enhancement from 50 to 107 K is much stronger for YbInCu 4 than for YbCdCu 4. On the other hand, the Yb 2+ 4f 7/2 structure of YbMgCu 4 is observed as a broad peak near E F and the spectra show little temperature dependence. In the Yb 4d photoemission spectra of YbInCu 4 and YbCdCu 4, the structures due to the Yb 2+ and Yb 3+ states are recognized. The intensity ratio Yb 2+/ Yb 3+ increases with decreasing temperature. In the Yb 4d spectra of YbMgCu 4, on the other hand, almost only structures due to Yb 2+ states are observed.

Local environment of arsenic in sulfide minerals: insights from high-resolution X-ray spectroscopies, and first-principles calculations at the As K-edge

2018 ◽  
Vol 33 (12) ◽  
pp. 2070-2082 ◽  
Author(s):  
Le Pape Pierre ◽  
Blanchard Marc ◽  
Juhin Amélie ◽  
Rueff Jean-Pascal ◽  
Ducher Manoj ◽  
...  
Keyword(s):  
High Resolution ◽  
Energy Resolution ◽  
First Principles ◽  
Local Environment ◽  
High Energy ◽  
Sulfide Minerals ◽  
High Energy Resolution ◽  
First Principles Calculations ◽  
X Ray ◽  
X Ray Scattering

To improve our knowledge of arsenic local environment in sulfide minerals, Resonant Inelastic X-Ray Scattering (RIXS) maps and High-Energy Resolution Fluorescence Detected (HERFD) XANES measurements are performed at the As K-edge. In addition, the spectra are compared to XANES modelled through first-principles calculations.

High energy resolution bandpass photon detector for inverse photoemission spectroscopy

2011 ◽  
Vol 82 (9) ◽  
pp. 093901 ◽  
Author(s):  
M. Maniraj ◽  
S. W. D’Souza ◽  
J. Nayak ◽  
Abhishek Rai ◽  
Sanjay Singh ◽  
...  
Keyword(s):  
Energy Resolution ◽  
High Energy ◽  
High Energy Resolution ◽  
Photoemission Spectroscopy ◽  
Photon Detector ◽  
Inverse Photoemission ◽  
Inverse Photoemission Spectroscopy

Improvement of spectrometer energy resolution for high-resolution photoelectron spectroscopy

1998 ◽  
Vol 5 (3) ◽  
pp. 1020-1022 ◽  
Author(s):  
H. Iwai ◽  
H. Namba ◽  
Y. Kido ◽  
M. Taguchi ◽  
R. Oiwa
Keyword(s):  
High Resolution ◽  
Synchrotron Radiation ◽  
Kinetic Energy ◽  
Energy Resolution ◽  
Photoelectron Spectroscopy ◽  
High Energy ◽  
Resolving Power ◽  
High Energy Resolution ◽  
Operation Conditions ◽  
Optimized Conditions

For high-energy-resolution photoelectron spectroscopy using synchrotron radiation, the energy resolution of a commercial compact photoelectron spectrometer (hemispherical concentric spectrometer) was improved by reducing the size of the entrance and detector slits and optimizing the operation conditions of the lens voltage. Under the optimized conditions, ray-tracing simulations show that severe spectral intensity decreases can be avoided. An energy resolution of 6.2 meV and a resolving power of 8100 at a kinetic energy of 50 eV were experimentally obtained.

Temperature-dependent high energy-resolution EELS of ferroelectric and paraelectricBaTiO3phases

2016 ◽  
Vol 93 (2) ◽  
Author(s):  
Matthieu Bugnet ◽  
Guillaume Radtke ◽  
Steffi Y. Woo ◽  
Guo-zhen Zhu ◽  
Gianluigi A. Botton
Keyword(s):  
Energy Resolution ◽  
High Energy ◽  
High Energy Resolution ◽  
Temperature Dependent

scholarly journals High-quality quartz single crystals for high-energy-resolution inelastic X-ray scattering analyzers

2013 ◽  
Vol 46 (4) ◽  
pp. 939-944 ◽  
Author(s):  
Marcelo Goncalves Hönnicke ◽  
Xianrong Huang ◽  
Cesar Cusatis ◽  
Chaminda Nalaka Koditwuakku ◽  
Yong Q. Cai
Keyword(s):  
High Resolution ◽  
Single Crystals ◽  
Energy Resolution ◽  
High Energy ◽  
High Energy Resolution ◽  
High Quality ◽  
X Ray ◽  
X Ray Scattering ◽  
Low Energies ◽  
Ray Scattering

Spherical analyzers are well known instruments for inelastic X-ray scattering (IXS) experiments. High-resolution IXS experiments almost always use Si single crystals as monochromators and spherical analyzers. At higher energies (>20 keV) Si shows a high energy resolution (<10 meV), at an exact symmetric back-diffraction condition, since the energy resolution is given by the real part of the susceptibility or polarizability. However, at low energies (<10 keV), high energy resolution is difficult to achieve with Si. α-SiO2 (quartz) can be an option, since it offers high energy resolution at low energies. In this work, the characterization of high-quality α-SiO2 is presented. Such characterization is made by high-resolution rocking curve, topography and lattice parameter mapping in different samples from a single block. X-ray optics with α-SiO2 for IXS at lower energies (from 2.5 to 12.6 keV) with medium to high energy resolution (from 90 to 11 meV) are proposed and theoretically exploited.

scholarly journals High-resolution X-ray absorption spectroscopy of iron carbonyl complexes

2015 ◽  
Vol 17 (21) ◽  
pp. 13937-13948 ◽  
Author(s):  
Andrew J. Atkins ◽  
Matthias Bauer ◽  
Christoph R. Jacob
Keyword(s):  
High Resolution ◽  
Absorption Spectroscopy ◽  
Energy Resolution ◽  
High Energy ◽  
Iron Carbonyl ◽  
High Energy Resolution ◽  
Carbonyl Complexes ◽  
Edge Structure ◽  
X Ray ◽  
X Ray Absorption

We apply high-energy-resolution fluorescence-detected (HERFD) X-ray absorption near-edge structure (XANES) spectroscopy to study iron carbonyl complexes.

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