Pressure effect in the Kondo semimetal CeRu4Sn6 with nontrivial topology*

Project supported by the Ministry of Science and Technology of China (Grant Nos. 2015CB921303 and 2017YFA0303103), the National Natural Science Foundation of China (Grant Nos. 11474332 and 11774404), and the Chinese Academy of Sciences through the Strategic Priority Research Program (Grant No. XDB07020200).

Zhang Jiahao1, 2, Zhang Shuai1, Chen Ziheng2, Lv Meng1, 2, Zhao Hengcan1, 2, Yang Yi-feng1, Chen Genfu1, Sun Peijie1, †
       

(color online) (a) X-ray diffraction from one as-grown facet of the single crystalline CeRu4Sn6. Inset shows the photograph of a typical single crystal. (b) X-ray diffraction of the polycrystalline CeRu4(Sn1 − xGex)6 with different x values. Here x is the nominal substitution concentration. “*” marks the peaks of secondary phases. (c) Lattice constants a and c as a function of x.