Fig. 2: Orbital 2CK resistivity of IrO2 NWs.
From: Oxygen vacancy-driven orbital multichannel Kondo effect in Dirac nodal line metals IrO2 and RuO2
ρ versus \(\sqrt{T}\) for IrO2 NWs A, B1 and B2 in magnetic fields B = 0, 6, and 9 T, as indicated. For clarity, the data of NWs B1 and B2 are shifted by 34.7 and 33.6 μΩ cm, respectively. A \(\rho \propto \sqrt{T}\) law, which is B independent, is observed between ~0.5 and ~20 K in all three NWs. The straight solid lines are linear fits to the 2CK resistivities calculated by the dynamical large-N method (see text). Top left inset: a scanning electron microscopy image of NW A. The scale bar is 1 μm. Top right inset: Low-T ρ(T) curves of NW A and a reference, oxygenated NW 3 (diameter d = 330 nm, ρ(300 K) = 124 μΩ cm).
