# Spin-resolved dynamical conductance of correlated large-spin magnetic molecules

## TL;DR

This paper theoretically investigates the frequency-dependent transport properties of large-spin magnetic molecules in the Kondo regime, revealing how conductance varies with magnetic configuration and intrinsic parameters, and predicting dynamical spin accumulation effects.

## Contribution

It introduces a detailed analysis of dynamical conductance in large-spin molecules using numerical renormalization group, highlighting the influence of magnetic configuration and spin-dependent tunneling.

## Key findings

- Conductance depends strongly on magnetic configuration and molecule parameters.
- Characteristic features appear at frequencies related to exchange fields.
- Dynamical spin accumulation is predicted and enhanced by lead polarization.

## Abstract

The finite-frequency transport properties of a large-spin molecule attached to ferromagnetic contacts are studied theoretically in the Kondo regime. The focus is on the behavior of the dynamical conductance in the linear response regime, which is determined by using the numerical renormalization group method. It is shown that the dynamical conductance depends greatly on the magnetic configuration of the device and intrinsic parameters of the molecule. In particular, conductance exhibits characteristic features for frequencies corresponding to the dipolar and quadrupolar exchange fields resulting from the presence of spin-dependent tunneling. Moreover, a dynamical spin accumulation in the molecule, associated with the off-diagonal-in-spin component of the conductance, is predicted. This spin accumulation becomes enhanced with increasing the spin polarization of the leads, and it results in a nonmonotonic dependence of the conductance on frequency, with local maxima occurring for characteristic energy scales.