著者
Kakihana Masashi Teruya Atsushi Nishimura Kengo Nakamura Ai Takeuchi Tetsuya Haga Yoshinori Harima Hisatomo Hedo Masato Nakama Takao Ōnuki Yoshichika
出版者
The Physical Society of Japan
雑誌
Journal of the Physical Society of Japan (ISSN:00319015)
巻号頁・発行日
vol.84, no.9, pp.94711-1-8, 2015-08-21
被引用文献数
17

We grew single crystals of ullmannite NiSbS and PbBiSe with the cubic chiral structure and carried out electrical resistivity, specific heat, and de Haas–van Alphen (dHvA) experiments to clarify their Fermi surface properties. The Fermi surfaces were found to split into two, reflecting the non-centrosymmetric crystal structure. The splitting energies between the two nearly spherical electron Fermi surfaces named α and α′ were determined as 220 K in NiSbS and 1050 K in PdBiSe for <italic>H</italic>|| [100] or [001]. This difference in splitting energies between the two compounds originates mainly from the fact that the spin–orbit interactions of Ni-3<italic>d</italic>, Sb-5<italic>p</italic>, and S-3<italic>p</italic>electrons in NiSbS are smaller in magnitude than those of Pd-4<italic>d</italic>, Bi-6<italic>p</italic>, and Se-4<italic>p</italic>electrons in PdBiSe, respectively.