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arXiv · 1901.04662

Superconductivity in the WP single crystal

Ziyi Liu·Wei Wu·Zhenzheng Zhao·Hengcan Zhao·Jian Cui·Pengfei Shan·Jiahao Zhang·Changli Yang·Peijie Sun·Yu Sui·Jinguang Cheng·Li Lu·Jianlin Luo·Guangtong Liu
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Abstract

We report the discovery of superconductivity on high-quality single crystals of transition-metal pnictides WP grown by chemical vapor transport (CVT) method. Bulk superconductivity is observed at Tc = 0.84 K under ambient pressure by electrical resistivity and AC magnetic susceptibility measurements. The effects of magnetic field on the superconducting transitions are studied, leading to a large anisotropy parameter around 2 with the in-plane and out-of-plane upper critical fields of Hc2=172 Oe and Hc2\=85 Oe, respectively. Our finding demonstrates that WP is the first superconductor in 5d transition-metal at ambient pressure in MnP-type, which will help to search for new superconductors in transition-metal pnictides.

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Ziyi Liu, Wei Wu, Zhenzheng Zhao, Hengcan Zhao, Jian Cui, Pengfei Shan, Jiahao Zhang, Changli Yang, Peijie Sun, Yu Sui, Jinguang Cheng, Li Lu, Jianlin Luo, Guangtong Liu. 2019-01-15. Superconductivity in the WP single crystal. https://doi.org/10.1103/physrevb.99.184509

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