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Tellurium substitution effect on superconductivity of the alpha-phase Iron Selenide
- Publication Year :
- 2008
-
Abstract
- We have carried out a systematic study of the PbO-type compound FeSe_{1-x}Te_x (x = 0~1), where Te substitution effect on superconductivity is investigated. It is found that superconducting transition temperature reaches a maximum of Tc=15.2K at about 50% Te substitution. The pressure-enhanced Tc of FeSe0.5Te0.5 is more than 10 times larger than that of FeSe. Interestingly, FeTe is no longer superconducting. A low temperature structural distortion changes FeTe from triclinic symmetry to orthorhombic symmetry. We believe that this structural change breaks the magnetic symmetry and suppresses superconductivity in FeTe.<br />Comment: Some typing errors are corrected; we take out one figures, now the paper has 14 pages, 5 figures
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.0808.0474
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1209/0295-5075/84/37002