Density wave like transport anomalies in surface doped Na$_{2}$IrO$_3$

Kavita Mehlawat; Yogesh Singh

doi:10.1063/1.4974916

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arXiv · 1704.00263

Density wave like transport anomalies in surface doped Na$_{2}$IrO$_3$

Kavita Mehlawat·Yogesh Singh

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Abstract

We report that the surface conductivity of Na$_{2}$IrO$_3$ crystal is extremely tunable by high energy Ar plasma etching and can be tuned from insulating to metallic with increasing etching time. Temperature dependent electrical transport for the metallic samples show signatures of first order phase transitions which are consistent with charge or spin density wave like phase transitions recently predicted theoretically. Additionally, grazing-incidence small-angle x-ray scattering (GISAXS) reveal that the room temperature surface structure of Na$_{2}$IrO$_3$ does not change after plasma etching.

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Kavita Mehlawat, Yogesh Singh. 2017-04-02. Density wave like transport anomalies in surface doped Na$_{2}$IrO$_3$. https://doi.org/10.1063/1.4974916

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