Dynamical spin accumulation in large-spin magnetic molecules
Artikel i vetenskaplig tidskrift, 2018

The frequency-dependent transport through a nanodevice containing a large-spin magnetic molecule is studied theoretically in the Kondo regime. Specifically, the effect of magnetic anisotropy on dynamical spin accumulation is of primary interest. Such accumulation arises due to finite components of frequency-dependent conductance that are off diagonal in spin. Here, employing the Kubo formalism and the numerical renormalization group method, we demonstrate that the dynamical transport properties strongly depend on the relative orientation of spin moments in electrodes of the device, as well as on intrinsic parameters of the molecule. In particular, the effect of dynamical spin accumulation is found to be greatly affected by the type of magnetic anisotropy exhibited by the molecule, and it develops for frequencies corresponding to the Kondo temperature. For the parallel magnetic configuration of the device, the presence of dynamical spin accumulation is conditioned by the interplay of ferromagnetic-lead-induced exchange field and the Kondo correlations.

quantum transport

magnetic anisotropy

Kondo effect

dynamical spin accumulation

Författare

Anna Plominska

Uniwersytet im. Adama Mickiewicza w Poznaniu

Ireneusz Weymann

Uniwersytet im. Adama Mickiewicza w Poznaniu

Maciej Misiorny

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Physical Review B - Condensed Matter and Materials Physics

1098-0121 (ISSN)

Vol. 97 3 035415-

Ämneskategorier

Fysik

Den kondenserade materiens fysik

DOI

10.1103/PhysRevB.97.035415