Pressure effect on superconductivity and magnetism in FeSex

L. Li; Z. R. Yang; M. Ge; L. Pi; J. T. Xu; B. S. Wang; Y. P. Sun; Y. H. Zhang

Pressure effect on superconductivity and magnetism in FeSex

Superconductivity 2008-09-02 v1

Authors: L. Li , Z. R. Yang , M. Ge , L. Pi , J. T. Xu , B. S. Wang , Y. P. Sun , Y. H. Zhang

Abstract

In this paper, pressure effect on superconductivity and magnetism has been investigated in FeSex (x = 0.80, 0.88). The magnetization curves display anomaly at Ts1 106 K and Ts2 78 K except for the superconducting diamagnetic transition around Tc 8 K. The magnetic anomaly at Ts1 and Ts2 can be related to a ferromagnetic and an antiferromagnetic phase transition, respectively, as revealed by specific heat measurements. The application of pressure not only raises Tc, but also increases both Ts1 and Ts2. This system shows clear evidence that superconductivity arises in a phase with strong magnetic character and the superconductivity coexists with magnetism. In addition, the specific heat anomaly associated with the superconducting transition seems to be absent.

Keywords

superconductivity magnetization single crystal superconductivity

Cite

@article{arxiv.0809.0128,
  title  = {Pressure effect on superconductivity and magnetism in FeSex},
  author = {L. Li and Z. R. Yang and M. Ge and L. Pi and J. T. Xu and B. S. Wang and Y. P. Sun and Y. H. Zhang},
  journal= {arXiv preprint arXiv:0809.0128},
  year   = {2008}
}

Pressure effect on superconductivity and magnetism in FeSex

Abstract

Keywords

Cite

Related papers