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Energy dependence of exact muffin-tin-orbital structure constants
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics. (Condensed Matter Theory Group)
2007 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 75, no 11, 115117- p.Article in journal (Refereed) Published
Abstract [en]

We investigate the energy dependence of the exact muffin-tin-orbital slope matrix in the complex energy plane. Analytic expressions for the asymptotic behavior of the slope matrix and its first energy derivative for large imaginary energies are given. We demonstrate that a two-center Taylor type expansion of the slope matrix accurately reproduces the exact values within a complex energy range covering the usual energy window used in electronic structure calculations. As an application, we study the composition dependence of the lattice parameters of the MgY binary system, a candidate material for hydrogen storage applications.

Place, publisher, year, edition, pages
2007. Vol. 75, no 11, 115117- p.
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-145390DOI: 10.1103/PhysRevB.75.115117ISI: 000245329600045OAI: oai:DiVA.org:uu-145390DiVA: diva2:396157
Available from: 2011-02-09 Created: 2011-02-08 Last updated: 2012-03-30Bibliographically approved

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Vitos, Levente
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