Thermoelectric transport in a three channel "charge" Kondo circuit

T. K. T. Nguyen, M. N. Kiselev

Published 2019-11-14Version 1

We investigate theoretically the thermoelectric transport through a circuit implementation of a quantum simulator of the three-channel Kondo model [Z. Iftikhar et al., Science 360, 1315 (2018)]. The universal temperature scaling law of the Seebeck coefficient is computed perturbatively at the non-Fermi liquid strong coupling fixed point using bosonization technique. The predicted scaling behaviour of the thermoelectric power sheds a light on the properties of $Z_3$ emerging parafermions and gives an access to exploring fractionalized zero modes in the quantum transport experiments. We discuss a generalization of approach for investigating a multi-channel Kondo problem with emergent $Z_N\to Z_M$ crossovers between the non-Fermi liquid regimes corresponding to different low-temperature strong coupling fixed points.