In a joint work between the Kroha group (core project 4.1), the Kirchner group (Zhejiang Institute of Modern Physics and Department of Physics, China) and the Lin group (National Chiao Tung University, Taiwan), new findings were reported in Nature Communications. The groups report the observation of orbital one- and two-channel Kondo physics in the symmetry-enforced Dirac nodal line (DNL) metals IrO2 and RuO2 nanowires and show that the symmetries that enforce the existence of DNLs also promote the formation of nonmagnetic Kondo correlations. Rutile oxide nanostructures thus form a versatile quantum matter platform to engineer and explore intrinsic, interacting topological states of matter.

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