Superconductivity in noncentrosymmetric Mo3P single crystal. (14th October 2019)

• Record Type: Journal Article
• Authors: Yang, Wuzhang; Lou, Zhefeng; Zhu, Qinqing; Chen, Bin; Wang, Hangdong; Mao, Qianhui; Du, Jianhua; Yang, Jinhu; Fang, Minghu
• Is Part Of: Superconductor science & technology. Volume 32:Number 11(2019:Nov.)
• Publication Date: 2019-10-14
• Subjects: noncentrosymmetric superconductivity -- Mo3P -- full gap -- two-band; Superconductivity -- Periodicals; Superconductors -- Periodicals; 537.623
• DOI: 10.1088/1361-6668/ab4172
• Languages: English
• ISSNs: 0953-2048

Abstract

Abstract: Superconductivity in single crystalline Mo3 P has been investigated by the measurement of electrical resistivity, magnetic susceptibility, and specific heat capacity. Its space group is I 4-2 m with lattice parameters a = b = 9.808 4 Å and c = 4.838 2 Å. A bulk superconductivity with a critical temperature of T C = 5.6 ± 0.1 K, an upper critical field of μ 0 H C 2 = 13.7 ± 0.1 kOe, and a lower critical field of μ 0 H C 1 = 190 ± 2 Oe for ρ ab were confirmed. A large anisotropic behavior was discovered in the resistivity and upper critical fields. A clear upward curvature in H c 2 was observed, suggesting a multiband superconductivity in Mo3 P. The value of the Ginzburg–Landau parameter κ GL indicates that Mo3 P is a type-II superconductor. Δ C ( T c )/ γ T c = 1.50 and 2Δ/ k B T c = 3.48 from the specific heat analyses indicate that Mo3 P is a weak-coupling Bardeen–Cooper–Schrieffer superconductor with fully gapped superconductivity.