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Electron self-energy calculation using a general multi-pole approximation

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Published 22 April 2003 • Published under licence by IOP Publishing Ltd
, , Citation J A Soininen et al 2003 J. Phys.: Condens. Matter 15 2573 DOI 10.1088/0953-8984/15/17/312

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Author affiliations

1 Department of Physics, University of Washington, Seattle, WA 98195, USA

2 Optical Technology Division, Physics Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA

Dates

  1. Received 14 February 2003
  2. Published

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0953-8984/15/17/2573

Abstract

We present a method for calculating the inverse of the dielectric matrix in a solid using a band Lanczos algorithm. The method produces a multi-pole approximation for the inverse dielectric matrix with an arbitrary number of poles. We discuss how this approximation can be used to calculate the screened Coulomb interaction needed for electron self-energy calculations in solids.

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10.1088/0953-8984/15/17/312