Transport properties of a multichannel Kondo dot in a magnetic field

TL;DR

This paper analyzes the nonequilibrium transport properties of a multichannel Kondo quantum dot under a magnetic field, providing analytical results for key physical quantities and revealing how magnetization influences conductance features.

Contribution

It offers the first analytical derivation of transport properties in a multichannel Kondo dot with magnetic field using the two-loop RG solution.

Findings

Finite magnetization couples conduction channels.

Additional features appear in differential conductance due to magnetization.

Analytical expressions for g factor, relaxation rates, and magnetization.

Abstract

We study the nonequilibrium transport through a multichannel Kondo quantum dot in the presence of a magnetic field. We use the exact solution of the two-loop renormalization group equation to derive analytical results for the g factor, the spin relaxation rates, the magnetization, and the differential conductance. We show that the finite magnetization leads to a coupling between the conduction channels which manifests itself in additional features in the differential conductance.