The "dark phase'' in Sr${}_2$Ir${}_{1-x}$Rh${}_x$O${}_4$ revealed by Seebeck and Hall measurements

Abstract

It was found that, although isovalent, Rh substituted for Ir in Sr${}_2$IrO${}_4$ may trap one electron inducing effective hole doping of Ir sites. Transport and thermoelectric measurements on Sr${}_2$Ir${}_{1-x}$Rh${}_x$O${}_4$ single crystals presented here reveal the existence of an electron-like contribution to transport, in addition to the hole-doped one. As no electron band shows up in ARPES measurements, this points to the possibility that this hidden electron may delocalize in disordered clusters.

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Cited by in corpus (2)

• Impurity-induced phonon thermal Hall effect in the antiferromagnetic phase of Sr2IrO4
• Origin of the different electronic structure of Rh- and Ru-doped Sr2IrO4