Characteristic fermi surface properties of VGa, CoGa, TiGa, ZrGa, and ZrAl with different tetragonal structures

照屋 淳志*; 竹田 政貴*; 仲村 愛*; 播磨 尚朝*; 芳賀 芳範; 内間 清春*; 辺土 正人*; 仲間 隆男*; 大貫 惇睦*

Journal of the Physical Society of Japan, 84(5), p.054703_1 - 054703_15, 2015/05

https://doi.org/10.7566/JPSJ.84.054703

A series of metallic compounds with the tetragonal symmetry are investigated to reveal the relationship between the structural dimensionality and the electronic structure. By combining the de Haas-van Alphen experiments and band structure calculations, a flat one-dimensional Fermi surface is revealed in VGa which is characterized by a chain like arrangement of atoms. On the other hand, CoGa with the nearly cubic symmetry has pyramidal Fermi surfaces with flat {111} planes, similar to NiGa with the ideal cubic structure.