Strongly correlated thermoelectric transport beyond linear response

Article

关键词: QUANTUM DOTS;    EQUILIBRIUM;    CONDUCTANCE;    JUNCTIONS;    DYNAMICS;    IMPURITY;    CURRENTS;    STATES;    NOISE;   

DOI  :  10.1103/PhysRevB.88.235133

来源: SCIE

【 摘 要 】

We investigate nonlinear thermoelectric transport through quantum impurity systems with strong on-site interactions. We show that the steady-state transport through interacting quantum impurities in contact with electron reservoirs at significantly different temperatures can be captured by an effective-equilibrium density matrix, expressed compactly in terms of the Lippmann-Schwinger operators of the system. In addition, the reservoirs can be maintained at arbitrary chemical potentials. The interplay between the temperature gradient and bias voltage gives rise to a nontrivial breaking of particle-hole symmetry in the strongly correlated regime, manifest in the Abrikosov-Suhl localized electron resonance. This purely many-body effect, which is in agreement with experimental results, is beyond the purview of mean-field arguments.

【 授权许可】

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