Thermoelectric Transport in a Three-Channel Charge Kondo Circuit

We theoretically investigate the thermoelectric transport through a circuit implementation of the three-channel charge Kondo model quantum simulator [Z. Iftikhar et al., Science 360, 1315 (2018)]. The universal temperature scaling law of the Seebeck coefficient is computed perturbatively approaching...

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Bibliographic Details
Published in:Physical review letters 2020-07, Vol.125 (2), p.1-026801, Article 026801
Main Authors: Nguyen, T. K. T., Kiselev, M. N.
Format: Article
Language:English
Subjects:
Charge transport
Computer simulation
Crossovers
Fermi liquids
Low temperature
Quantum transport
Scaling laws
Seebeck effect
Thermoelectricity
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Summary:We theoretically investigate the thermoelectric transport through a circuit implementation of the three-channel charge Kondo model quantum simulator [Z. Iftikhar et al., Science 360, 1315 (2018)]. The universal temperature scaling law of the Seebeck coefficient is computed perturbatively approaching the non-Fermi liquid strong coupling fixed point using the Abelian bosonization technique. The predicted T1/3 log T scaling behavior of the thermoelectric power sheds light on the properties of Z3 emerging parafermions and gives access to exploring prefractionalized zero modes in the quantum transport experiments. We discuss a generalization of approach for investigating a multichannel Kondo problem with emergent ZN → ZM crossovers between "weak" non-Fermi liquid regimes corresponding to different low-temperature fixed points.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.125.026801