TOMBO: All-electron mixed-basis approach to condensed matter physics
2014; Elsevier BV; Volume: 189; Linguagem: Inglês
10.1016/j.cpc.2014.11.012
ISSN1879-2944
AutoresShota Ono, Yoshifumi Noguchi, Ryoji Sahara, Yoshiyuki Kawazoe, Kaoru Ohno,
Tópico(s)Advanced Condensed Matter Physics
ResumoTOMBO is a computer code for calculating the electronic structure of systems that consist both of core and valence electrons and nuclei, based on density-functional theory. It is based on an all-electron mixed-basis approach, in which the Kohn–Sham (KS) wave function is expressed by a linear combination of plane-waves and atomic-orbitals. This approach can describe both spatially localized and extended orbitals, which enables us to perform all-electron calculations with high accuracy from isolated clusters to periodic crystals. The present paper describes a theory of the all-electron mixed-basis approach, as well as input variables and benchmark tests in TOMBO. The algorithm for accelerating the computational time that is needed to solve the KS equation is also presented.
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