Spin glass behavior of insulating K0.8Fe2-xS2
classification
❄️ cond-mat.supr-con
cond-mat.mtrl-scicond-mat.str-el
keywords
behaviorisostructuralbelowcompoundcompoundscrystalsdefectsdiscovery
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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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