Hall coefficient diagnostics of surface state in pressurized SmB6

30 Sep 2019 Zhou Yazhou Rosa Priscila F. S. Guo Jing Cai Shu Yu Rong Jiang Sheng Yang Ke Li Aiguo Si Qimiao Wu Qi Fisk Zachary Sun Liling

In this study, we report the first results of the high-pressure Hall coefficient (RH) measurements in the putative topological Kondo insulator SmB6 up to 37 GPa. Below 10 GPa, our data reveal that RH(T) exhibits a prominent peak upon cooling below 20 K. Remarkably, the temperature at which surface conduction dominates coincides with the temperature of the peak in RH(T)... (read more)

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