Fermi surface and magnetic properties of PrTIn (T: Co, Rh, and Ir)

Hieu, N. V.*; Shishido, Hiroaki*; Thamizhavel, A.*; Settai, Rikio*; Araki, Shingo*; Nozue, Yasuo*; Matsuda, Tatsuma; Haga, Yoshinori   ; Takeuchi, Tetsuya*; Harima, Hisatomo*; Onuki, Yoshichika

We grew single crystals of PrCoIn, PrRhIn, and PrIrIn with the tetragonal crystal structure and measured the electrical resistivity, specific heat, magnetic susceptibility, magnetization and de Haas-van Alphen effect. These Pr compounds reveal no magnetic ordering. The topology of the Fermi surfaces is the same as that of a non-4 f reference compound LaRhIn. The cyclotron mass and/or the electronic specific heat coefficient are also approximately the same as those of LaRhIn. The magnetic susceptibility and magnetization are anisotropic, reflecting the crystal structure, which are well explained by the tetragonal crystalline electric field scheme with the singlet ground state.