Mesoscopic features in the transport properties of a Kondo-correlated quantum dot in a magnetic field

TL;DR

This paper investigates how a magnetic field affects mesoscopic oscillations in the transport properties of a Kondo-correlated quantum dot connected to finite-size wires, revealing temperature-like behavior induced by the field.

Contribution

It introduces a detailed analysis of magnetic field effects on mesoscopic oscillations in a Kondo quantum dot using quantum Monte Carlo simulations, highlighting novel field-induced behaviors.

Findings

Magnetic field modifies mesoscopic oscillations in the quantum dot.

Field effects resemble temperature-dependent behavior in the system.

Quantum Monte Carlo effectively captures the transport phenomena.

Abstract

We study the transport behavior induced by a small bias voltage through a quantum dot connected to one-channel finite-size wires. We describe the quantum dot by the Hubbard-Kondo which is solved by means of a quantum Monte Carlo method. We investigate the effect of a magnetic field applied at the quantum dot in the Kondo regime. We identify changes in the behavior of mesoscopic oscillations introduced by the magnetic field that have an analogous behavior to those observed as a function of the temperature.