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PHYSICAL REVIEW B 97, 085403 (2018)

ISSN: 1098-0121, SCI

Seebeck effect on a weak link between Fermi and non-Fermi liquids

T. K. T. Nguyen and M. N. Kiselev

We propose a model describing Seebeck effect on a weak link between two quantum systems with fine-tunable ground states of Fermi and non-Fermi liquid origin. The experimental realization of the model can be achieved by utilizing the quantum devices operating in the integer quantum Hall regime [Z. Iftikhar et al., Nature (London) 526, 233 (2015)] designed for detection of macroscopic quantum charged states in multichannel Kondo systems. We present a theory of thermoelectric transport through hybrid quantum devices constructed from quantumdot– quantum-point-contact building blocks. We discuss pronounced effects in the temperature and gate voltage dependence of thermoelectric power associated with a competition between Fermi and non-Fermi liquid behaviors. High controllability of the device allows to fine tune the system to different regimes described by multichannel and multi-impurity Kondo models.

URL: https://link.aps.org/doi/10.1103/PhysRevB.97.085403

DOI: 10.1103/PhysRevB.97.085403