Erratum: Evolution of precipitate morphology during heat treatment and its implications for the superconductivity inKxFe1.6+ySe2single crystals [Phys. Rev. B86, 144507 (2012)

Abstract

In this article, we study the relationship between precipitate morphology and superconductivity in KxFe1.6+ySe2 single crystals grown by self-flux method. Scanning electron microscopy (SEM) measurements revealed that the superconducting phase forms a network in the samples quenched above iron vacancy order-disorder transition temperature Ts, whereas it aggregates into micrometer-sized rectangular bars and aligns as disconnected chains in the furnace-cooled samples.