Local Structure of Mott Insulating Iron Oxychalcogenides La$_{2}$O$_{2}$Fe$_{2}$O$M$$_{2}$ ($M$ = S, Se)

24 Feb 2020 Karki B. Alfailakawi A. Frandsen B. Everett M. S. Neuefeind J. C. Xu Binjie Wang Hangdong Fang Minghu Freelon B.

We describe the local structural properties of the iron oxychalcogenides, La$_2$O$_2$Fe$_2$O$M_2$ ($M$ = S, Se), by using pair distribution function (PDF) analysis and Rietveld refinement methods applied to neutron diffraction data. Our results show that $M$ = S and Se possess similar nuclear structure at low and room temperatures... (read more)

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  • STRONGLY CORRELATED ELECTRONS
  • SUPERCONDUCTIVITY