Dataset Information


Dynamic spin filtering at the Co/Alq3 interface mediated by weakly coupled second layer molecules.

ABSTRACT: Spin filtering at organic-metal interfaces is often determined by the details of the interaction between the organic molecules and the inorganic magnets used as electrodes. Here we demonstrate a spin-filtering mechanism based on the dynamical spin relaxation of the long-living interface states formed by the magnet and weakly physisorbed molecules. We investigate the case of Alq3 on Co and, by combining two-photon photoemission experiments with electronic structure theory, show that the observed long-time spin-dependent electron dynamics is driven by molecules in the second organic layer. The interface states formed by physisorbed molecules are not spin-split, but acquire a spin-dependent lifetime, that is the result of dynamical spin-relaxation driven by the interaction with the Co substrate. Such spin-filtering mechanism has an important role in the injection of spin-polarized carriers across the interface and their successive hopping diffusion into successive molecular layers of molecular spintronics devices.

PROVIDER: S-EPMC5013676 | BioStudies |

REPOSITORIES: biostudies

Similar Datasets

2016-01-01 | S-EPMC4835731 | BioStudies
| S-EPMC6713754 | BioStudies
2016-01-01 | S-EPMC4725759 | BioStudies
| S-EPMC6628795 | BioStudies
| S-EPMC4330096 | BioStudies
| S-EPMC8469572 | BioStudies
2015-01-01 | S-EPMC4633823 | BioStudies
2016-01-01 | S-EPMC4756305 | BioStudies
| S-EPMC4369752 | BioStudies
| S-EPMC8556253 | BioStudies