Journal
PHYSICAL REVIEW B
Volume 80, Issue 16, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.80.165411
Keywords
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Funding
- Ministry of Education, Culture, Sports, Science and Technology, Japan [1706400]
- Cybermedia Center, Osaka University
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When modeling a surface/interface using a slab geometry that imposes the periodic boundary condition, there are spurious dipole and higher-order multipole interactions with the image slabs. Here, we show that the effective screening medium (ESM) method [M. Otani and O. Sugino, Phys. Rev. B 73, 115407 (2006)] can deal with such electrostatic issues rigorously in a slab calculation. After benchmark calculations for a hypothetical water layer, we show that there is an error in the total energy caused by the multipole interaction, but this can be treated efficiently using the ESM method. The accurate treatment of the electrostatic interaction is essential for performing large-scale surface/interface calculations.
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