Multiband transport in RuO$_2$
Florent Pawula (1, 2), Ali Fakih (1), Ramzy Daou (1), Sylvie, H\'ebert (1), Natalia Mordvinova (1), Oleg Lebedev (1), Denis Pelloquin (1),, and Antoine Maignan (1) ((1) CRISMAT Caen, (2) IMN Nantes)
TL;DR
This study investigates the electrical and thermal transport properties of RuO₂ single crystals, confirming their metallic behavior and multiband transport characteristics through various measurements up to high temperatures.
Contribution
It provides detailed experimental evidence of multiband transport in RuO₂, including resistivity, Seebeck coefficient, magnetoresistance, and Hall effect measurements.
Findings
RuO₂ exhibits metallic transport up to 970K.
Transport behavior is best described by a multiband model.
Ordinary Hall effect dominates over anomalous Hall effect.
Abstract
We present electrical and thermal transport measurements in single crystals of the metallic oxide RuO. The resistivity and Seebeck coefficient measured up to 970K confirm the metallic nature of transport. Magnetoresistance and Hall effect measurements as a function of orientation can be most easily described by a multiband transport model. We find that the ordinary Hall effect dominates any anomalous Hall signal in single crystals.
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