Pressure induced superconductivity in the compound ScZrCo

We report on the synthesis and physical properties of a new compound, ScZrCo, which crystallizes in the Ti _2 Ni structure with the space group of ${\rm{Fd}}\overline{3}{\rm{m}}{\rm{S}}$ without a spatial inversion center. The resistivity at ambient pressure shows a semiconducting-like behavior. Fur...

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Bibliographic Details
Main Authors: Enyu Wang, Jin Si, Xiyu Zhu, Guan-Yu Chen, Hai Lin, Hai-Hu Wen
Format: Article
Language:English
Published: IOP Publishing 2018-01-01
Series:New Journal of Physics
Subjects:
Online Access:https://doi.org/10.1088/1367-2630/aad213
Description
Summary:We report on the synthesis and physical properties of a new compound, ScZrCo, which crystallizes in the Ti _2 Ni structure with the space group of ${\rm{Fd}}\overline{3}{\rm{m}}{\rm{S}}$ without a spatial inversion center. The resistivity at ambient pressure shows a semiconducting-like behavior. Furthermore, specific heat and magnetic susceptibility measurements yield a rather large value of Wilson ratio ≈4.47. Both suggest a ground state with correlation effect. By applying pressure, the up-going behavior of resistivity in the low temperature region is suppressed and superconductivity emerges. Up to 36.1 GPa, a superconducting transition at about 3.6 K with a quite high upper critical field is observed. Our discovery here provides a new platform for investigating the relationship between the correlation effect and superconductivity.
ISSN:1367-2630