Phonon-assisted and magnetic field induced Kondo tunneling in single molecular devices

TL;DR

This paper explores how magnetic fields and phonon interactions influence Kondo tunneling in magnetic molecules, revealing tunable multiphonon resonances that depend on Zeeman splitting.

Contribution

It introduces a mechanism for controlling multiphonon Kondo resonances via magnetic field tuning in magnetic molecular complexes.

Findings

Kondo resonances can be modulated by magnetic field changes.

Number of assisting phonons varies with Zeeman splitting.

Magnetic field tuning scans multiphonon Kondo structures.

Abstract

We consider the Kondo tunneling induced by multiphonon emission/absorption processes in magnetic molecular complexes with low-energy singlet-triplet spin gap and show that the number of assisting phonons may be changed by varying the Zeeman splitting of excited triplet state. As a result, the structure of multiphonon Kondo resonances may be scanned by means of magnetic field tuning.