Measurements of ultraclean SrVO3 (left) on electron microscopy image provide new insights into correlated electron materials, contrasting with defect-dense SrVO3 (right). The plot shows material quality via resistivity ratios (RRR). (IMAGE)
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Flowing electricity through materials is a simple way to understand their properties. Measurements of ultraclean SrVO3 shown on the left schematically in the Hall bar device and the electron microscopy image, give new insight into the basic phenomena found in correlated electron materials. This is in contrast to SrVO3 that is dense with defects (right). The quality of the materials is manifest in the resistivity versus temperature where the ratio of the resistivity at room temperature to low temperature, RRR indicate the quality, shown in the plot.
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