Journal
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
Volume 91, Issue 9, Pages -Publisher
PHYSICAL SOC JAPAN
DOI: 10.7566/JPSJ.91.091011
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Funding
- World Premier International Research Centre Initiative (WPI Initiative) on Materials Nanoarchitectonics (MANA)
- JSPS [JP18H01143, JP20H05883, JP20H05878]
- JST PRESTO [JPMJPR20T4]
- New Energy and Industrial Technology Development Organization (NEDO) [JPNP16010]
- EPSRC [EP/P022561/1, EP/P020194]
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This article reviews the application of the multi-site support function (MSSF) method in large-scale density functional theory (DFT) calculations. The MSSF method reduces computational time while maintaining accuracy, and can be applied to materials with complex structures.
Large-scale density functional theory (DFT) calculations provide a powerful tool to investigate the atomic and electronic structure of materials with complex structures. This article reviews a large-scale DFT calculation method, the multi-site support function (MSSF) method, in the CONQUEST code. MSSFs are linear combinations of the basis functions which belong to a group of atoms in a local region. The method can reduce the computational time while preserving accuracy. The accuracy of MSSFs has been assessed for bulk Si, Al, Fe and NiO and hydrated DNA, which demonstrate the applicability of the MSSFs for varied materials. The applications of MSSFs on large systems with several thousand atoms, which have complex interfaces and non-periodic structures, indicate that the MSSF method is promising for precise investigations of materials with complex structures.
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