Spin-Polarization Transfer in Colloidal Magnetic-Plasmonic Au/Iron Oxide Hetero-nanocrystals. Pineider, F., de Julián Fernández, C., Videtta, V., Carlino, E., al Hourani, A., Wilhelm, F., Rogalev, A., Cozzoli, P. D., Ghigna, P., & Sangregorio, C. ACS Nano, 7(1):857--866, January, 2013. ![Spin-Polarization Transfer in Colloidal Magnetic-Plasmonic Au/Iron Oxide Hetero-nanocrystals [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex We report on the unprecedented direct observation of spin-polarization transfer across colloidal magneto-plasmonic Au@Fe-oxide core@shell nanocrystal heterostructures. A magnetic moment is induced into the Au domain when the magnetic shell contains a reduced Fe-oxide phase in direct contact with the noble metal. An increased hole density in the Au states suggested occurrence of a charge-transfer process concomitant to the magnetization transfer. The angular to spin magnetic moment ratio, morb/mspin, for the Au 5d states, which was found to be equal to 0.38, appeared to be unusually large when compared to previous findings. A mechanism relying on direct hybridization between the Au and Fe states at the core/shell interface is proposed to account for the observed transfer of the magnetic moment.
@article{pineider_spin-polarization_2013,
title = {Spin-{Polarization} {Transfer} in {Colloidal} {Magnetic}-{Plasmonic} {Au}/{Iron} {Oxide} {Hetero}-nanocrystals},
volume = {7},
issn = {1936-0851},
url = {http://dx.doi.org/10.1021/nn305459m},
doi = {10.1021/nn305459m},
abstract = {We report on the unprecedented direct observation of spin-polarization transfer across colloidal magneto-plasmonic Au@Fe-oxide core@shell nanocrystal heterostructures. A magnetic moment is induced into the Au domain when the magnetic shell contains a reduced Fe-oxide phase in direct contact with the noble metal. An increased hole density in the Au states suggested occurrence of a charge-transfer process concomitant to the magnetization transfer. The angular to spin magnetic moment ratio, morb/mspin, for the Au 5d states, which was found to be equal to 0.38, appeared to be unusually large when compared to previous findings. A mechanism relying on direct hybridization between the Au and Fe states at the core/shell interface is proposed to account for the observed transfer of the magnetic moment.},
number = {1},
urldate = {2013-06-21TZ},
journal = {ACS Nano},
author = {Pineider, Francesco and de Julián Fernández, César and Videtta, Valeria and Carlino, Elvio and al Hourani, Awni and Wilhelm, Fabrice and Rogalev, Andrei and Cozzoli, P. Davide and Ghigna, Paolo and Sangregorio, Claudio},
month = jan,
year = {2013},
pages = {857--866}
}
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