Spin-dependent trapping of electrons at spinterfaces. Steil, S., Großmann, N., Laux, M., Ruffing, A., Steil, D., Wiesenmayer, M., Mathias, S., Monti, O. L. A., Cinchetti, M., & Aeschlimann, M. Nature Phys., 9(4):242–247, April, 2013. Number: 4![Spin-dependent trapping of electrons at spinterfaces [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Hybrid ferromagnetic metal/organic interfaces—also known as spinterfaces—can exhibit highly efficient spin-filtering properties and therefore present a promising class of materials for the future development of new spintronic devices. Advancing the field depends critically on elucidating the fundamental microscopic processes that eventually determine the spin-filtering properties in such hybrid structures. Here, we study the femtosecond spin dynamics at the prototypical interface between cobalt and the metalorganic complex tris(8-hydroxyquinolinato)aluminium. To disentangle the microscopic origin of spin filtering, we optically generate a transient spin polarization in a well-defined hybrid interface state that we follow with a spin-resolved real-time pump–probe two-photon photoemission experiment. We find that the electrons are trapped at the interface in a spin-dependent manner for a surprisingly long time of the order of 0.5–1 ps. We conclude that ferromagnetic metal/organic interfaces act as spin filters because electrons are trapped in hybrid interface states by spin-dependent confining potentials.
@article{steil_spin-dependent_2013,
title = {Spin-dependent trapping of electrons at spinterfaces},
volume = {9},
copyright = {© 2013 Nature Publishing Group},
issn = {1745-2473},
url = {http://www.nature.com/nphys/journal/v9/n4/full/nphys2548.html},
doi = {10.1038/nphys2548},
abstract = {Hybrid ferromagnetic metal/organic interfaces—also known as spinterfaces—can exhibit highly efficient spin-filtering properties and therefore present a promising class of materials for the future development of new spintronic devices. Advancing the field depends critically on elucidating the fundamental microscopic processes that eventually determine the spin-filtering properties in such hybrid structures. Here, we study the femtosecond spin dynamics at the prototypical interface between cobalt and the metalorganic complex tris(8-hydroxyquinolinato)aluminium. To disentangle the microscopic origin of spin filtering, we optically generate a transient spin polarization in a well-defined hybrid interface state that we follow with a spin-resolved real-time pump–probe two-photon photoemission experiment. We find that the electrons are trapped at the interface in a spin-dependent manner for a surprisingly long time of the order of 0.5–1 ps. We conclude that ferromagnetic metal/organic interfaces act as spin filters because electrons are trapped in hybrid interface states by spin-dependent confining potentials.},
language = {en},
number = {4},
urldate = {2014-04-13},
journal = {Nature Phys.},
author = {Steil, Sabine and Großmann, Nicolas and Laux, Martin and Ruffing, Andreas and Steil, Daniel and Wiesenmayer, Martin and Mathias, Stefan and Monti, Oliver L. A. and Cinchetti, Mirko and Aeschlimann, Martin},
month = apr,
year = {2013},
note = {Number: 4},
keywords = {Condensed-matter physics, Materials physics},
pages = {242--247},
}
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