Nonequilibrium Kondo effect under finite thermal bias

The transport through strongly correlated nanostructures such as quantum dots, adatoms, nanowires or magnetic molecules have been under tremendous research interest. The electronic and thermoelectric properties of such nanostructures show fascinating behavior under the strong correlation regime. In particular, the equilibrium Kondo effect, a many-body screening effect shows a zero-bias conductance peak along with a sign-change in the Seebeck effect. The Numerical Renormalization Group method is a robust method that can describe the Kondo effect accurately in the linear response regime, but the nonlinear response regime requires sophisticated numerical techniques to describe the strong correlations accurately. In this work, we study the nonequilibrium Kondo effect in a quantum dot coupled to metallic leads with finite potential and temperature biases using the recently developed hybrid Numerical Renormalization Group-time-dependent Density Matrix Renormalization Group method (NRG-tDMRG). In particular, we describe the electronic conductance, the Seebeck coefficient, and the heat conductance of a Kondo-correlated quantum dot in the nonlinear transport regime.