Dynamical spin accumulation in large-spin magnetic molecules
Journal article, 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

Author

Anna Plominska

Adam Mickiewicz University in Poznań

Ireneusz Weymann

Adam Mickiewicz University in Poznań

Maciej Misiorny

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

Physical Review B - Condensed Matter and Materials Physics

1098-0121 (ISSN)

Vol. 97 3 035415-

Subject Categories

Physical Sciences

Condensed Matter Physics

DOI

10.1103/PhysRevB.97.035415

More information

Latest update

6/13/2018