Single crystal growth and fermi surface property in ThRhIn

Matsuda, Tatsuma; Haga, Yoshinori   ; Yamamoto, Etsuji  ; Ikeda, Shugo; Shishido, Hiroaki*; Settai, Rikio*; Harima, Hisatomo*; Onuki, Yoshichika

We succeeded in growing a high-quality single crystal of ThRhIn with the HoCoGa-type tetragonal crystal structure by the In-flux method. The lattice parameters, positional parameters and thermal parameters were determined from single-crystal X-ray diffraction measurements. We also measured the electrical resistivity and de Haas-van Alphen (dHvA) effect. Main dHvA branches are very similar to those of the 4-itinerant heavy fermion superconductor CeCoIn, but the cyclotron effective masses are by one to two orders of magnitude smaller than those of CeCoIn. These Fermi surface properties are well explained by the FLAPW energy band calculations.