Work

Topological Semimetals Studied by Ab Initio Calculations

Year: 2018

Type: article

Abstract: In topological semimetals such as Weyl, Dirac, and nodal-line semimetals, the band gap closes at points or along lines in k space which are not necessarily located at high-symmetry positions in the Brillouin zone. Therefore, it is not straightforward to find these topological semimetals by ab initio calculations because the band structure is usually calculated only along high-symmetry lines. In this paper, we review recent studies on topological semimetals by ab initio calculations. We explain theoretical frameworks which can be used for the search for topological semimetal materials, and some numerical methods used in the ab initio calculations.

Source: Journal of the Physical Society of Japan

DOI: 10.7566/jpsj.87.041002

Authors: Motoaki Hirayama, Ryo Okugawa, Shuichi Murakami

Institutions: Tokyo Institute of Technology, RIKEN Center for Emergent Matter Science

Language: English

Topic: Topological Materials and Phenomena

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Ministry of Education, Culture, Sports, Science and Technology, Japan Society for the Promotion of Science, Core Research for Evolutional Science and Technology