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arXiv · 2102.07517

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

L. Fruchter·V. Brouet
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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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L. Fruchter, V. Brouet. 2021-02-15. The "dark phase'' in Sr$_2$Ir$_{1-x}$Rh$_x$O$_4$ revealed by Seebeck and Hall measurements. https://doi.org/10.1088/1361-648x/abeb45

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