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

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.

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Cited by in corpus (5)

• Dynamical spin accumulation in large-spin magnetic molecules
• Signatures of Kondo-Majorana interplay in ac response
• Manipulating spins of magnetic molecules: Hysteretic behavior with respect to bias voltage
• Tunnel magnetoresistance of a supramolecular spin valve
• Time-dependent spintronic anisotropy in magnetic molecules