Low-temperature lattice structure anomaly in theLaFeAsO0.93F0.07superconductor by x-ray absorption spectroscopy: Evidence for a strong electron-phonon interaction

2008 ◽  
Vol 78 (21) ◽  
Author(s):  
C. J. Zhang ◽  
H. Oyanagi ◽  
Z. H. Sun ◽  
Y. Kamihara ◽  
H. Hosono
Keyword(s):  
Low Temperature ◽  
Absorption Spectroscopy ◽  
Lattice Structure ◽  
Phonon Interaction ◽  
Strong Electron ◽  
X Ray ◽  
Electron Phonon Interaction ◽  
Temperature Lattice ◽  
X Ray Absorption

Size-dependent lattice structure of palladium studied by x-ray absorption spectroscopy

2007 ◽  
Vol 75 (12) ◽  
Author(s):  
Chih-Ming Lin ◽  
Tsu-Lien Hung ◽  
Yen-Heng Huang ◽  
Kung-Te Wu ◽  
Mau-Tsu Tang ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Lattice Structure ◽  
X Ray ◽  
Size Dependent ◽  
X Ray Absorption

Structural properties of low-temperature grown ZnO thin films determined by X-ray diffraction and X-ray absorption spectroscopy

2011 ◽  
Vol 519 (13) ◽  
pp. 4366-4370 ◽  
Author(s):  
Chung-Jong Yu ◽  
Nark-Eon Sung ◽  
Han-Koo Lee ◽  
Hyun-Joon Shin ◽  
Young-Duck Yun ◽  
...  
Keyword(s):  
Thin Films ◽  
Low Temperature ◽  
Structural Properties ◽  
Absorption Spectroscopy ◽  
Zno Thin Films ◽  
X Ray Diffraction ◽  
X Ray ◽  
X Ray Absorption

X-ray Absorption Spectroscopy of Low Temperature Fuel Cell Catalysts

2004 ◽  
Vol 104 (10) ◽  
pp. 4613-4636 ◽  
Author(s):  
Andrea E. Russell ◽  
Abigail Rose
Keyword(s):  
Fuel Cell ◽  
Low Temperature ◽  
Absorption Spectroscopy ◽  
X Ray ◽  
Fuel Cell Catalysts ◽  
X Ray Absorption

The electronic structure and the photoluminescence property of the photocatalyst BaZn1/3Nb2/3O3

2007 ◽  
Vol 22 (8) ◽  
pp. 2185-2188 ◽  
Author(s):  
B. Xu ◽  
W.F. Zhang ◽  
X.Y. Liu ◽  
J. Yin ◽  
Z.G. Liu
Keyword(s):  
Electronic Structure ◽  
Conduction Band ◽  
Function Theory ◽  
Stokes Shift ◽  
Photoluminescence Property ◽  
X Ray Diffraction ◽  
Phonon Interaction ◽  
Strong Electron ◽  
X Ray ◽  
Electron Phonon Interaction

The photocatalyst BaZn1/3Nb2/3O3 with ABO3 perovskite structure has been synthesized by using a solid-state reaction process. It was characterized by x-ray diffraction and photoluminescence spectroscopy. The luminescence band centers around 285 nm and shows a large Stokes shift compared with the excitation spectrum, indicating a strong electron–phonon interaction in the photocatalyst BaZn1/3Nb2/3O3. The electronic structure of BaZn1/3Nb2/3O3 was calculated by using the pseudopotential method of the density function theory. It shows that the conduction band should be mainly composed of the Nb 4d states, and the valence band should be mainly composed of the O 2p state. The densities of the O 2p states and the Zn 4s states at the bottom of the conduction band are very low. The Zn 4s states show an expanded structure, which was proposed to be helpful for the migration of the photoexcited carriers, thus favoring the photocatalytic activity of BaZn1/3Nb2/3O3.

An overview on the research of Sr2IrO4-based system probed by X-ray absorption spectroscopy

2018 ◽  
Vol 32 (08) ◽  
pp. 1850094
Author(s):  
Jie Cheng ◽  
Chaomin Zhu ◽  
Jingyuan Ma ◽  
Yu Wang ◽  
Shengli Liu
Keyword(s):  
Absorption Spectroscopy ◽  
Lattice Structure ◽  
Theoretical Calculations ◽  
Parent Compound ◽  
Transition Metal Ions ◽  
Spin Orbit Coupling ◽  
X Ray ◽  
Local Lattice ◽  
Carrier Doping ◽  
X Ray Absorption

Investigations of materials with 5d transition metal ions have opened up new paradigms in condensed-matter physics because of their large spin-orbit coupling (SOC) interactions. The typical compound is Sr2IrO4, which attracted much attention due to its similarities to the parent compound of high-[Formula: see text] cuprate superconductor La2CuO4. Theoretical calculations predicted that the unconventional superconductivity can occur in carrier doped-Sr2IrO4 system. Until now, hundreds of experimental methods were devoted to investigate the carrier doping effect on Sr2IrO4. Synchrotron radiation-based X-ray absorption spectroscopy (XAS) made great contributions to the local lattice and electronic structure, and also the intimate relationship between the local structure and physical properties induced by carrier doping. The aim of this review is a short introduction to the progress of research on Sr2IrO4-based system probed by the unique technique — XAS, including the strength of the SOC, valence changes upon doping and even local lattice structure with atomic level for this Sr2IrO4-based family.

A cell for combined UV-visible and x-ray absorption spectroscopy studies under low-temperature and air exclusion conditions

2002 ◽  
Vol 73 (8) ◽  
pp. 2994-2998 ◽  
Author(s):  
V. S. I. Sprakel ◽  
M. C. Feiters ◽  
R. J. M. Nolte ◽  
P. M. F. M. Hombergen ◽  
A. Groenen ◽  
...  
Keyword(s):  
Low Temperature ◽  
Absorption Spectroscopy ◽  
X Ray ◽  
A Cell ◽  
Uv Visible ◽  
Spectroscopy Studies ◽  
X Ray Absorption
Sign in / Sign up

Export Citation Format

Share Document