Ferroelectric control of the spin texture in germanium telluride

Abstract

The electrical manipulation of spins in semiconductors, without magnetic fields or auxiliary ferromagnetic materials, represents the holy grail for spintronics. The use of Rashba effect is very attractive because the k-dependent spin-splitting is originated by an electric field. So far only tiny effects in two-dimensional electron gases (2DEG) have been exploited. Recently, GeTe has been predicted to have bulk bands with giant Rashba-like splitting, originated by the inversion symmetry breaking due to ferroelectric polarization. In this work, we show that GeTe(111) surfaces with inwards or outwards ferroelectric polarizations display opposite sense of circulation of spin in bulk Rashba bands, as seen by spin and angular resolved photoemission experiments. Our results represent the first experimental demonstration of ferroelectric control of the spin texture in a semiconductor, a fundamental milestone towards the exploitation of the non-volatile electrically switchable spin texture of GeTe in spintronic devices.

18 pages, 4 figures

References in corpus (3)

• Entanglement and manipulation of the magnetic and spin-orbit order in multiferroic Rashba semiconductors
• Very Efficient Spin Polarization Analysis (VESPA): New Exchange Scattering-based Setup for Spin-resolved ARPES at APE-NFFA Beamline at Elettra
• Spin filtering implemented through Rashba and weak magnetic modulations

Cited by in corpus (43)

• Oxide spin-orbitronics: spin-charge interconversion and topological spin textures
• Electrical control of magnetism by electric field and current-induced torques
• Room-temperature ferroelectric switching of spin-to-charge conversion in GeTe
• Rashba spin-splitting in ferroelectric oxides: from rationalizing to engineering
• Reversible Gas Sensing by Ferroelectric Switch and 2D Molecule Multiferroics in In2Se3 Monolayer
• Persistent spin helix in Rashba-Dresselhaus ferroelectric CsBiNb2O7
• Modulated Interlayer Exciton Properties in a Two-Dimensional Moire Crystal
• Ultrathin SnTe films as a route towards all-in-one spintronics devices
• Bulk Rashba Effect in Multiferroics: a theoretical prediction for BiCoO3
• Strain-induced gauge and Rashba fields in ferroelectric Rashba lead chalcogenide PbX monolayers (X = S, Se, Te)
• Switchable Rashba Anisotropy in Two-dimensional Hybrid Organic-Inorganic Perovskite by Hybrid Improper Ferroelectricity
• Tunable spin textures in polar antiferromagnetic hybrid organic inorganic perovskites by electric and magnetic fields
• Analogs of Rashba-Edelstein effect from density functional theory
• Spin-Neutral Tunneling Anomalous Hall Effect
• Band splitting with vanishing spin polarizations in noncentrosymmetric crystals
• Origin of Rashba spin-splitting and strain tunability in ferroelectric bulk CsPbF${}_3$
• Switchable enhanced spin photocurrent in Rashba and cubic Dresselhaus ferroelectric semiconductors
• Chirality-induced spin texture switching in twisted bilayer graphene
• Noncollinear electric dipoles in a polar, chiral phase of CsSnBr${}_3$ perovskite
• Reversible giant out-of-plane Rashba effect in two-dimensional Ga$XY$ ($X$= Se, Te; $Y$= Cl, Br, I) compounds for persistent spin helix
• Fe/GeTe(111) heterostructures as an avenue towards 'ferroelectric Rashba semiconductors'-based spintronics
• Nonreciprocal electrical transport in multiferroic semiconductor (Ge,Mn)Te
• Unveiling the complete dispersion of the giant Rashba split surface states of ferroelectric $\alpha$-GeTe(111) by alkali doping
• Gate-dependent non-linear Hall effect at room temperature in topological semimetal GeTe
• Ferroelectric control of charge-to-spin conversion in WTe${}_2$
• A Novel Ferroelectric Rashba Semiconductor
• Field-induced ultrafast modulation of Rashba coupling at room temperature in ferroelectric $\alpha$-GeTe(111)
• Spin Texture as Polarization Fingerprint of Halide Perovskites
• Reversible canted persistent spin textures with large spin splitting in two-dimensional ferroelectric bilayer WTe${}_2$
• Tunning Spin Hall conductivities in GeTe by Ferroelectric Polarization
• Dynamic negative capacitance regime in GeTe Rashba ferroelectric
• A topological phase buried in a chalcogenide superlattice monitored by a helicity dependent Kerr measurement
• Reentrant proximity-induced superconductivity for GeTe semimetal
• Duality and degeneracy lifting in two-dimensional electron liquids on SrTiO${}_3$(001)
• Current-induced spin and orbital polarization in the ferroelectric Rashba semiconductor GeTe
• Unified Magnetoelectric Mechanism for Spin Splitting in Magnets
• Domain wall migration-mediated ferroelectric switching and Rashba effect tuning in GeTe thin films
• Ferroelectric switching control of spin current in graphene proximitized by In${}_2$Se${}_3$
• Surface spin polarization in the magnetic response of GeTe Rashba ferroelectric
• Conduction Band Structure and Ultrafast Dynamics of Ferroelectric $\alpha$-GeTe(111)
• Ubiquitous Ideal Spin-Orbit Coupling in a Screw Dislocation in Semiconductors
• Electrical Control of Large Rashba Effect in Oxide Heterostructures
• Investigation of the intrinsic hidden spin texture and spin-state segregation in centrosymmetric monolayer dichalcogenide: effectiveness of the electric-field approach