First-principles calculations of x-ray absorption in a scheme based on ultrasoft pseudopotentials: From -quartz to high- compounds

C Gougoussis, M Calandra, AP Seitsonen… - Physical Review B …, 2009 - APS
We develop a first-principles scheme based on the continued-fraction approach and ultrasoft
pseudopotentials to calculate K-edge x-ray absorption spectra in solids, allowing such …

Projector augmented wave calculation of x-ray absorption spectra at the edges

O Bunău, M Calandra - Physical Review B—Condensed Matter and Materials …, 2013 - APS
We develop a technique based on density functional theory and the projector augmented
wave method in order to obtain the x-ray absorption cross section at a general edge, both in …

Theoretical calculations of x-ray-absorption spectra of copper in and related oxide compounds

J Guo, DE Ellis, GL Goodman, EE Alp, L Soderholm… - Physical Review B, 1990 - APS
We report the results of theoretical calculations of copper K-edge x-ray-absorption near-
edge spectra (XANES) in La 2 CuO 4 and related oxides Cu 2 O, CuO, and KCuO 2. The …

Dynamic screening effects in x-ray absorption spectra

AL Ankudinov, AI Nesvizhskii, JJ Rehr - Physical Review B, 2003 - APS
Calculations of x-ray absorption for soft x rays are often dependent on screening of the x-ray
field and the photoelectron–core-hole interaction. Though screening is usually calculated …

Electronic and x-ray-absorption structure in compressed copper

RC Albers, AK McMahan, JE Müller - Physical Review B, 1985 - APS
Using electronic band-structure techniques, we calculate the K-and L-edge absorption
spectra for fcc copper over a wide range of compressions. As copper is compressed the x …

Real-space multiple-scattering calculation and interpretation of x-ray-absorption near-edge structure

AL Ankudinov, B Ravel, JJ Rehr, SD Conradson - Physical Review B, 1998 - APS
A self-consistent real-space multiple-scattering (RSMS) approach for calculations of x-ray-
absorption near-edge structure (XANES) is presented and implemented in an ab initio code …

Plane-wave DFT-LDA calculation of the electronic structure and absorption spectrum of copper

A Marini, G Onida, R Del Sole - Physical Review B, 2001 - APS
We present an accurate, first-principles study of the electronic structure and absorption
spectrum of bulk copper within density functional theory in the local density approximation …

Combined Bethe-Saltpeter equations and time-dependent density-functional theory approach for x-ray absorption calculations

AL Ankudinov, Y Takimoto, JJ Rehr - Physical Review B—Condensed Matter …, 2005 - APS
Many-body effects such as local fields and the core-hole interaction can be significant in x-
ray absorption spectra even several hundred eV above an absorption edge. The treatment …

Self-consistent aspects of x-ray absorption calculations

O Bunău, Y Joly - Journal of Physics: Condensed Matter, 2009 - iopscience.iop.org
We implemented a self-consistent, real-space x-ray absorption calculation within the
FDMNES code. We performed the self-consistency within several schemes and identified …

X-ray absorption near-edge structure in alpha-quartz and stishovite: Ab initio calculation with core–hole interaction

SD Mo, WY Ching - Applied Physics Letters, 2001 - pubs.aip.org
Ab initio calculation of the XANSE/ELNES spectra for α quartz and stishovite were carried
out using a large-supercell approach that includes the electron–core–hole interaction …