Superconductivity in a new layered bismuth oxyselenide: LaO<sub>0.5</sub>F<sub>0.5</sub>BiSe<sub>2</sub>
Superconductivity in a new layered bismuth oxyselenide: LaO<sub>0.5</sub>F<sub>0.5</sub>BiSe<sub>2</sub>
We report superconductivity in a new layered bismuth oxyselenide LaO0.5F0.5BiSe2 with the ZrCuSiAs-type structure composed of alternating superconducting BiSe2 and blocking LaO layers. The superconducting transition temperature is TC = 2.6K, as revealed from DC magnetization, resistivity and muon spin rotation (muSR) experiments. DC magnetization measurements indicate a superconducting volume …