https://doi.org/10.1140/epjb/e2009-00371-4
Spin-dependent transport in organic-ferromagnets
Department of Applied Physics, National University of Kaohsiung, Kaohsiung 811, Taiwan, China
Corresponding author: a sjs@nuk.edu.tw
Received:
17
March
2009
Revised:
15
September
2009
Published online:
3
November
2009
Based on the modified Su-Schrieffer-Heeger model and the non-equilibrium Green's function current formula, the spin polarization of the ferromagnet-electrode connected organic ferromagnet is theoretically studied. The spin polarization can be suppressed by atomic dimerization and be driven by an applied electric field. We investigate the spin polarization from the viewpoint of energy competitions in different interactions under the electric field. In addition, the ferromagnetic electrodes significantly enhance the spin polarization.
PACS: 73.61.Ph – Polymers; organic compounds / 85.75.-d – Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields / 72.25.-b – Spin polarized transport
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2009
