http://www.cnr.it/ontology/cnr/individuo/prodotto/ID204471
Spin-selective pathways in linear and nonlinear photoemission from ferromagnets (Articolo in rivista)
- Type
- Label
- Spin-selective pathways in linear and nonlinear photoemission from ferromagnets (Articolo in rivista) (literal)
- Anno
- 2012-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1103/PhysRevB.85.165137 (literal)
- Alternative label
Cheng-Tien Chiang,1 Aimo Winkelmann,1,* J¨urgen Henk,1 Francesco Bisio,1,2 and J¨urgen Kirschner1 (2012)
Spin-selective pathways in linear and nonlinear photoemission from ferromagnets
in Physical review. B, Condensed matter and materials physics
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Cheng-Tien Chiang,1 Aimo Winkelmann,1,* J¨urgen Henk,1 Francesco Bisio,1,2 and J¨urgen Kirschner1 (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- 1Max Planck Institute of Microstructure Physics, Weinberg 2, 06120 Halle, Germany
2CNR-SPIN Corso Perrone 24, I-16152, Genova, Italy (literal)
- Titolo
- Spin-selective pathways in linear and nonlinear photoemission from ferromagnets (literal)
- Abstract
- We observe an enhanced spin polarization and reduction of surface sensitivity due to the intermediate
unoccupied electronic states in spin-resolved two-photon photoemission (2PPE) from ultrathin ferromagnetic
cobalt films. By comparison to one-photon photoemission (1PPE) measurements, we disentangle the 2PPE
signals coming from the initial and intermediate electronic states and determine the influence of the unoccupied
quantum-well states in the nonlinear two-photon transitions. Our results point out the importance of spindependent
pathways in nonlinear photoemission and provide a possible mechanism of spin-filtering in optical
transitions. (literal)
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