Extended Huckel tight-binding calculations of the electronic structure of YbFe<inf>4</inf>Sb<inf>12</inf>, UFe<inf>4</inf>P<inf>12</inf>, and ThFe<inf>4</inf>P<inf>12</inf>

Donald Galván, R. Dilley, B. Maple, A. Posada-Amarillas, Armando Reyes-Serrato, C. Samaniego Reyna

Research output: Contribution to journalArticle

Abstract

Calculation of the band structure, total and projected density of states, crystal orbital population analysis (COOP), and Mulliken population analysis were performed for the filled skutterudites YbFe4Sb12, UFe4P12, and ThFe4P12. The calculated energy bands depict a semimetal behavior for YbFe4Sb12 and UFe4P12, and metallic behavior for ThFe4P12. Furthermore, the contributions from each orbital to the total DOS for each compound corroborate these findings. The bonding strength was derived from the COOP analysis between different pairs of atoms, considering nearest neighbor distances between 3.40 and 6.47 Å for YbFe4Sb12, 2.91 and 6.47 Å for UFe4P12, and 2.48 and 5.51 Å for ThFe4P12. Mulliken population analysis suggests ionic behavior for these compounds. © 2003 The American Physical Society.
Original languageAmerican English
JournalPhysical Review B - Condensed Matter and Materials Physics
DOIs
StatePublished - 1 Jan 2003

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