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Computation of Atmospheric Concentrations of Molecular Clusters from ab initio Thermochemistry
12:11

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Published on: April 8, 2020

Core-level spectroscopy calculation and the plane wave pseudopotential method.

Shang-Peng Gao1, Chris J Pickard, Alexander Perlov

  • 1Department of Materials Science, Fudan University, Shanghai 200433, People's Republic of China.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|August 6, 2011
PubMed
Summary
This summary is machine-generated.

A new plane wave method accurately calculates core-level spectra. This approach, implemented in CASTEP, shows strong agreement with experimental data and other density functional theory methods.

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Area of Science:

  • Solid-state physics
  • Computational materials science
  • Quantum chemistry

Background:

  • Core-level spectroscopy provides insights into electronic structure.
  • Accurate theoretical calculations are crucial for interpreting experimental spectra.
  • Density functional theory (DFT) is a powerful tool for electronic structure calculations.

Purpose of the Study:

  • To present a plane wave based method for calculating core-level spectra.
  • To detail the implementation of this method within the CASTEP code.
  • To assess the accuracy and applicability of the developed method.

Main Methods:

  • Implementation of a plane wave based approach in the CASTEP code.
  • Utilizing pseudopotential density functional theory.
  • Performing calculations for core-level spectra.

Main Results:

  • The plane wave based method was successfully implemented in CASTEP.
  • The method demonstrates good applicability and accuracy.
  • Calculated spectra show good agreement with experimental results and other DFT techniques.

Conclusions:

  • The presented plane wave method is a reliable tool for calculating core-level spectra.
  • The CASTEP implementation offers a viable approach for electronic structure studies.
  • This work validates the method against experimental and computational benchmarks.