By performing density functional theory and Green's functions calculations, complemented by x-ray photoemission spectroscopy, we investigate the electronic structure of Fe/GeTe(111), a prototypical ferromagnetic/Rashba-ferroelectric interface. We reveal that such a system exhibits several intriguing properties resulting from the complex interplay of exchange interaction, electric polarization, and spin-orbit coupling. Despite a rather strong interfacial hybridization between Fe and GeTe bands, resulting in a complete suppression of the surface states of the latter, the bulk Rashba bands are hardly altered by the ferromagnetic overlayer. This could have a deep impact on spin-dependent phenomena observed at this interface, such as spin-to-charge interconversion, which are likely to involve bulk rather than surface Rashba states.

Fe/GeTe(111) heterostructures as an avenue towards spintronics based on ferroelectric Rashba semiconductors / Sławińska, J.; Di Sante, D.; Varotto, S.; Rinaldi, C.; Bertacco, R.; Picozzi, S.. - In: PHYSICAL REVIEW. B. - ISSN 2469-9950. - ELETTRONICO. - 99:7(2019), pp. 075306-075306. [10.1103/PhysRevB.99.075306]

Fe/GeTe(111) heterostructures as an avenue towards spintronics based on ferroelectric Rashba semiconductors

Di Sante, D.
Secondo
Membro del Collaboration Group
;
2019

Abstract

By performing density functional theory and Green's functions calculations, complemented by x-ray photoemission spectroscopy, we investigate the electronic structure of Fe/GeTe(111), a prototypical ferromagnetic/Rashba-ferroelectric interface. We reveal that such a system exhibits several intriguing properties resulting from the complex interplay of exchange interaction, electric polarization, and spin-orbit coupling. Despite a rather strong interfacial hybridization between Fe and GeTe bands, resulting in a complete suppression of the surface states of the latter, the bulk Rashba bands are hardly altered by the ferromagnetic overlayer. This could have a deep impact on spin-dependent phenomena observed at this interface, such as spin-to-charge interconversion, which are likely to involve bulk rather than surface Rashba states.
2019
Fe/GeTe(111) heterostructures as an avenue towards spintronics based on ferroelectric Rashba semiconductors / Sławińska, J.; Di Sante, D.; Varotto, S.; Rinaldi, C.; Bertacco, R.; Picozzi, S.. - In: PHYSICAL REVIEW. B. - ISSN 2469-9950. - ELETTRONICO. - 99:7(2019), pp. 075306-075306. [10.1103/PhysRevB.99.075306]
Sławińska, J.; Di Sante, D.; Varotto, S.; Rinaldi, C.; Bertacco, R.; Picozzi, S.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/892822
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