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

Abstract

By performing density functional theory (DFT) 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 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.

arXiv comment8 pages, 4 figures

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Cited by in corpus (6)

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• Persistent spin helix in Rashba-Dresselhaus ferroelectric CsBiNb2O7
• Ultrathin SnTe films as a route towards all-in-one spintronics devices
• Interfacial crystal Hall effect reversible by ferroelectric polarization
• Analogs of Rashba-Edelstein effect from density functional theory
• Ferroelectric control of charge-to-spin conversion in WTe${}_2$