Concepedia

Pressure Effects on Superconductivity and Magnetism in FeSe<sub>1-<i>x</i></sub>Te<sub><i>x</i></sub>

C.-L. Huang, Chih-Chieh Chou, Kuo-Feng Tseng, Yi-Lin Huang, Fong-Chi Hsu, K. C. Yeh, Mau-Kuen Wu, H. D. Yang

Journal of the Physical Society of Japan · 2009 · 29 citations · 21 references

DOI

Concepts

Abstract

The pressure ( P ) dependence of AC susceptibility and electrical resistivity of FeSe 0.88 and FeSe 0.5 Te 0.5 has been studied. The superconducting transition temperature ( T c ) of FeSe 0.5 Te 0.5 is found to be more sensitive to P than it is in FeSe 0.88 , which is believed to arise from the strongly distorted structure. The enhancement of T c by P is mainly attributed to an increase of density of states, which implies that the superconductivity in FeSe 1- x Te x favors pairing mechanism in the context of strong-coupling BCS theory.

References

21

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Superconductivity at 55 K in Iron-Based F-Doped Layered Quaternary Compound Sm[O <sub> 1- <i>x</i> </sub> F <sub> <i>x</i> </sub> ] FeAs

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