Single crystal synthesis and physical properties of stannides with Yb3Rh4Sn13-structure
C. W. Tseng (曾致維)1*, C. N. Kuo (郭家農)1,2, C. M. Wang (王昶閔)1, C. S. Lue (呂欽山)1,2, L. M. Wang (王立民)3, Y. K. Kuo (郭永綱)4
1Department of Physics, National Cheng Kung University, Tainan, Taiwan
2Taiwan Consortium of Emergent Crystalline Materials, Ministry of Science and Technology, Taipei, Taiwan
3Graduate Institute of Applied Physics / Department of Physics, National Taiwan University, Taipei, Taiwan
4Department of Physics, National Dong Hwa University, Hualien, Taiwan
* presenting author:曾致維,
Ternary stannides with the Yb3Rh4Sn13-type structure continue to attract attention in the field of condensed matter physics due to a rich of structural, electronic, and magnetic phenomena in the materials of this family. In this work, we report the single crystal synthesis and the physical properties of Sr3Ir4Sn13 and Sr3Rh4Sn13. We first describe the growth of single crystalline Sr3Ir4Sn13 and Sr3Rh4Sn13 by using the Sn self-flux method. Sr3Ir4Sn13 and Sr3Rh4Sn13 are superconductors and exhibit pronounced phase transition features at 147 K and 137 K, respectively. To further assess the phase transition nature of both systems, we carried out the electrical resistivity, Hall coefficient, Seebeck coefficient, thermal conductivity, specific heat, and 119Sn nuclear magnetic resonance (NMR) measurements, mainly focusing on the signatures around each phase transition temperature T*. The phase transition has been characterized by marked features near T* in all measured physical quantities. The related physical properties of Sr3Ir4Sn13 and Sr3Rh4Sn13 revealed from the present study will be discussed in this talk.

Keywords: Yb3Rh4Sn13-type structure, phase transition, NMR