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

Article

关键词: COULOMB-BLOCKADE;    KONDO PROBLEM;    OSCILLATIONS;    THERMOPOWER;    ELECTRON;    BEHAVIOR;    METALS;    POINT;    FIELD;    MODEL;   

DOI  :  10.1103/PhysRevB.97.085403

来源: SCIE

【 摘 要 】

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 quantum-dot-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.

【 授权许可】

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