Conditions for requiring nonlinear thermoelectric transport theory in nanodevices

Abstract

In this paper, we examine the conditions under which the nonlinear transport theory is inescapable, when a correlated quantum dot is symmetrically coupled to two leads submitted to temperature and voltage biases. By detailed numerical comparisons between nonlinear and linear currents, we show that the claimed nonlinear behavior in a temperature gradient for the electric current is not so genuine, and the linear theory made at the operating temperature $\bar{T}=(T_H+T_C)/2$ is unexpectedly robust. This is demonstrated for the single impurity Anderson model, in different regimes: resonant tunneling, Coulomb blockade and Kondo regimes.

References in corpus (6)

• Quantum thermal transport in nanostructures
• Thermopower of a Kondo-correlated quantum dot
• Thermoelectric transport through strongly correlated quantum dots
• Scattering theory of nonlinear thermoelectric transport
• Strongly nonlinear thermovoltage and heat dissipation in interacting quantum dots
• Kondo physics and orbital degeneracy interact to boost thermoelectrics on the nanoscale

Cited by in corpus (8)

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• Thermoelectric properties of a double quantum dot out of equilibrium in Kondo and intermediate valence regimes
• Role of asymmetry in thermoelectric properties of a double quantum dot out of equilibrium
• Quantum coherent control of linear and nonlinear thermoelectricity on graphene nanostructure heat engines
• Topological Interface States and Nonlinear Thermoelectric Performance in Armchair Graphene Nanoribbon Heterostructures
• Fano effect in a thermally induced transport through a triple quantum dot within the Coulomb blockade regime