1. Single crystal growth, structural and transport properties of bad metal RhSb2.
- Author
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D S Wu, Y T Qian, Z Y Liu, W Wu, Y J Li, S H Na, Y T Shao, P Zheng, G Li, J G Cheng, H M Weng, and J L Luo
- Subjects
CRYSTAL growth ,SINGLE crystals ,DIAMAGNETISM ,MAGNETIC susceptibility ,SPECIFIC heat ,HALL effect ,ELECTRONIC structure - Abstract
We have successfully grown an arsenopyrite marcasite type RhSb
2 single crystal, and systematically investigated its crystal structure, electrical transport, magnetic susceptibility, heat capacity, and thermodynamic properties. We found that the temperature-dependent resistivity exhibits a bad metal behavior with a board peak around 200 K. The magnetic susceptibility of RhSb2 shows diamagnetism from 300 K to 2 K. The low-temperature specific heat shows a metallic behavior with a quite small electronic specific-heat coefficient. No phase transition is observed in both specific heat and magnetic susceptibility data. The Hall resistivity measurements show that the conduction carriers are dominated by electrons with ne = 8.62 × 1018 cm−3 at 2 K, and the electron carrier density increases rapidly above 200 K without change sign. Combining with ab-initio band structure calculations, we showed that the unusual peak around 200 K in resistivity is related to the distinct electronic structure of RhSb2 . In addition, a large thermopower S(T) about –140 μV/K is observed around 200 K, which might be useful for future thermoelectric applications. [ABSTRACT FROM AUTHOR]- Published
- 2020
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