Optical Absorption Spectra Calculated Using Linear-Scaling Density-Functional Theory
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Optical Absorption Spectra Calculated Using Linear-Scaling Density-Functional Theory: (Springer Theses)

Optical Absorption Spectra Calculated Using Linear-Scaling Density-Functional Theory: (Springer Theses)


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About the Book

The development of linear-scaling density functional theory (LS-DFT) has made ab initio calculations on systems containing thousands of atoms possible. These systems range from nanostructures to biomolecules. These methods rely on the use of localized basis sets, which are optimised for the representation of occupied Kohn-Sham states but do not guarantee an accurate representation of the unoccupied states.  This is problematic if one wishes to combine the power of LS-DFT with that of theoretical spectroscopy, which provides a direct link between simulation and experiment.  In this work a new method is presented for optimizing localized functions to accurately represent the unoccupied states, thus allowing theoretical spectroscopy of large systems. Results are presented for optical absorption spectra calculated using the ONETEP code, but the method is equally applicable to other spectroscopies and LS formulations. Other topics covered include a study of some simple one dimensional basis sets and the presentation of two methods for band structure calculation using localized basis sets, both of which have important implications for the use of localized basis sets within LS-DFT.

Table of Contents:
Density Functional Theory.- Linear-Scaling Methods.- Theoretical Spectroscopy.- Basis Sets and Band Structures.- Conduction States: Methods and Applications.- Results and Discussion.


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Product Details
  • ISBN-13: 9783319033730
  • Publisher: Springer International Publishing AG
  • Publisher Imprint: Springer International Publishing AG
  • Height: 235 mm
  • No of Pages: 116
  • Returnable: Y
  • Width: 155 mm
  • ISBN-10: 3319033735
  • Publisher Date: 15 Jun 2015
  • Binding: Paperback
  • Language: English
  • Returnable: Y
  • Series Title: Springer Theses


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Optical Absorption Spectra Calculated Using Linear-Scaling Density-Functional Theory: (Springer Theses)
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