Spin glass behavior of insulating K0.8Fe2-xS2

Details Spin glass behavior of insulating K0.8Fe2-xS2 Spin glass behavior of insulating K0.8Fe2-xS2

2011-01-28

arxiv.org/abs/1101.5616v2

Phys. Rev. B 83 180503(R) (2011)

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.83.180503

We report the discovery of KxFe2-yS2 single crystals, isostructural to KxFe2-ySe2 superconductors. The sulfide compound is a small gap semiconductor and shows spin-glass behavior below 32 K. Our results indicate that stoichiometry, defects, and the local environment of FeCh (Ch = S,Se) tetrahedra have important effects on the physical properties of isostructural and isoelectronic KxFe2-yCh2 compounds.

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