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

正方晶構造を持つVGa, CoGa, TiGa, ZrGa, 及び ZrAlのフェルミ面の特徴

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*

Teruya, Atsushi*; Takeda, Masataka*; Nakamura, Ai*; Harima, Hisatomo*; Haga, Yoshinori; Uchima, Kiyoharu*; Hedo, Masato*; Nakama, Takao*; Onuki, Yoshichika*

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.