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Dirac Fermions in Tetragonal Fe2Ge.
- Source :
-
Journal of Superconductivity & Novel Magnetism . Dec2023, Vol. 36 Issue 10-12, p1855-1859. 5p. - Publication Year :
- 2023
-
Abstract
- Density functional theory is employed to investigate the electronic band structure of tetragonal Fe 2 Ge. The Dirac cone formation is identified in the bulk electronic configuration of Fe 2 Ge near the Fermi energy level, rather than in the surface states as anticipated. The analysis of Dirac bands suggests that tetragonal Fe 2 Ge can be considered as topological crystalline insulator as suggested by Liang Fu et al. in Phys. Rev. B 76, 045302. The Dirac point exhibits quadratic degeneracy at the high symmetry point 'X' for spin-up channel and at 'M' for spin-down channel in the tetragonal Brillouin zone. The effect of lattice strain and spin-orbit coupling on the energy gap opening at the Dirac point as well as the dependency of the exchange-correlation functional are discussed. These current studies will add a new family of alloys to the topological phase in the band insulators. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15571939
- Volume :
- 36
- Issue :
- 10-12
- Database :
- Academic Search Index
- Journal :
- Journal of Superconductivity & Novel Magnetism
- Publication Type :
- Academic Journal
- Accession number :
- 173891088
- Full Text :
- https://doi.org/10.1007/s10948-023-06629-x