Transport through single-level quantum dot in a magnetic field

TL;DR

This paper investigates how an external magnetic field influences electron transport in a quantum dot, revealing complex behaviors like switching effects under certain conditions using advanced theoretical methods.

Contribution

It introduces an extended functional renormalization group approach to analyze non-equilibrium transport in quantum dots under magnetic fields, highlighting new phenomena.

Findings

Magnetic field significantly alters transport properties.

Switching behavior observed at intermediate correlations.

Interplay of energy scales affects conductance.

Abstract

We study the effect of an external magnetic field on the transport properties of a quantum dot using a recently developed extension of the functional renormalization group approach to non-equilibrium situations. We discuss in particular the interplay and competition of the different energy scales of the dot and the magnetic field on the stationary non-equilibrium current and conductance. As rather interesting behavior we find a switching behavior of the magnetic field for intermediate correlations and bias voltage.