Entanglement and manipulation of the magnetic and spin-orbit order in multiferroic Rashba semiconductors

Abstract

The interplay between electronic eigenstates, spin, and orbital degrees of freedom, combined with fundamental breaking of symmetries is currently one of the most exciting fields of research. Multiferroics such as (GeMn)Te fulfill these requirements providing unusual physical properties due to the coexistence and coupling between ferromagnetic and ferroelectric order in one and the same system. Here we show that multiferroic (GeMn)Te inherits from its parent ferroelectric α-GeTe compound a giant Rashba splitting of three-dimensional bulk states which competes with the Zeeman spin splitting induced by the magnetic exchange interactions. The collinear alignment of ferroelectric and ferromagnetic polarization leads to an opening of a tunable Zeeman gap of up to 100 meV around the Dirac point of the Rashba bands, coupled with a change in spin texture by entanglement of magnetic and spin-orbit order. Through applications of magnetic fields, we demonstrate manipulation of spin- texture by spin resolved photoemission experiments, which is also expected for electric fields based on the multiferroic coupling. The control of spin helicity of the bands and its locking to ferromagnetic and ferroelectric order opens fascinating new avenues for highly multifunctional multiferroic Rashba devices suited for reprogrammable logic and/or nonvolatile memory applications.

arXiv comment10 pages, 4 figures

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Cited by in corpus (32)

• Large magnetic gap at the Dirac point in a Mn-induced Bi${}_2$Te${}_3$ heterostructure
• Ferroelectric control of the spin texture in germanium telluride
• Surface versus bulk contributions to the giant Rashba splitting in the ferroelectric α-GeTe(111) semiconductor
• Rashba-like spin splitting along three momentum directions in trigonal layered PtBi2
• Origin of the Magnetic Spin Hall Effect: Spin Current Vorticity in the Fermi Sea
• Operando imaging of all-electric spin texture manipulation in ferroelectric and multiferroic Rashba semiconductors
• The Rashba Scale: Emergence of Band Anti-Crossing as a Design Principle for Materials with Large Rashba coefficient
• Spin- and angle-resolved photoemission on topological materials
• Symmetry analysis with spin crystallographic groups: Disentangling effects free of spin-orbit coupling in emergent electromagnetism
• 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
• Prediction of intrinsic topological superconductivity in Mn-doped GeTe monolayer from first-principles
• Fe/GeTe(111) heterostructures as an avenue towards 'ferroelectric Rashba semiconductors'-based spintronics
• Nonreciprocal electrical transport in multiferroic semiconductor (Ge,Mn)Te
• Triple point fermions in ferroelectric GeTe
• Evolution of electronic states and emergence of superconductivity in the polar semiconductor GeTe by doping valence-skipping In
• Unveiling the complete dispersion of the giant Rashba split surface states of ferroelectric $\alpha$-GeTe(111) by alkali doping
• Giant Rashba splitting in PtTe/PtTe${}_2$ heterostructure
• Spin-orbit-derived giant magnetoresistance in a layered magnetic semiconductor AgCrSe2
• Minority-Spin Impurity Band in n-Type (In,Fe)As: A Materials Perspective for Ferromagnetic Semiconductors
• Collective topological spin dynamics in a correlated spin glass
• Magnetic parity violation and parity-time-reversal-symmetric magnets
• Magnetic Skyrmionic Polarons
• Current-induced spin and orbital polarization in the ferroelectric Rashba semiconductor GeTe
• Enhanced ferromagnetic transition temperature induced by a microscopic structural rearrangement in the diluted magnetic semiconductor Ge${}_{1-x}$Mn${}_x$Te
• 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${}_3$
• Ultrafast modulation of covalency in GeTe driven by a ferroelectric soft mode
• Universal intrinsic orbital dynamics from Berry curvature in electronic two-band systems
• Quantum geometry in low-energy linear and nonlinear optical responses of magnetic Rashba semiconductor (Ge,Mn)Te
• Theory of Seebeck ratchet in noncentrosymmetric electron-phonon coupled system
• Impact of a Fano resonance on the measured transition time scale in solid state photoemission