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.

References in corpus (7)

• Mott Insulators in the Strong Spin-Orbit Coupling Limit: From Heisenberg to a Quantum Compass and Kitaev Models
• Novel Jeff = 1/2 Mott State Induced by Relativistic Spin-Orbit Coupling in Sr2IrO4
• Coulomb-Enhanced Spin-Orbit Splitting: The Missing Piece in the Sr2RhO4 Puzzle
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• Charge partitioning and anomalous hole doping in Rh-doped Sr2IrO4
• Optical Signature of a Crossover from Mott- to Slater-type Gap in Sr${}_2$Ir${}_{1-x}$Rh${}_x$O${}_4$
• Doping-dependent bandwidth renormalization and spin-orbit coupling in (Sr${}_{1-x}$La${}_x$)${}_2$RhO${}_4$

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