Electrically switchable hidden spin polarization in antiferroelectric crystals

Abstract

Hidden spin polarization (HSP) emerges in centrosymmetric crystals where visible spin splittings in the real space can be observed because of the lack of inversion symmetry in each local sector. Starting from tight-binding models, we introduce nonsymmorphic antiferroelectric (AFE) crystals as a new class of functional materials that can exhibit strong local spin polarization. Such AFE crystals can be basically classified as in-plane and out-of-plane AFE configurations, and can be reversibly switched to the ferroelectric phase by an electric field to manifest global spin splittings, enabling a nonvolatile electrical control of spin-dependent properties. Based on first-principle calculations, we predict the realization of strong HSP in the AFE phase of a newly-discovered two-dimensional materials, quintuple-layer (QL) LiBiO${}_2$. Furthermore, the spontaneous electric polarization ($\sim$ 0.3 nC/m) and the transition barrier as well as the tunable spin polarization of QL-LiBiO${}_2$ are discussed.

arXiv comment5 figures

References in corpus (23)

• Antiferromagnetic spintronics
• Low-energy effective Hamiltonian involving spin-orbit coupling in Silicene and Two-Dimensional Germanium and Tin
• Out-of-plane Piezoelectricity and Ferroelectricity in Layered $\alpha$-In2Se3 Nano-flakes
• An Exact SU(2) Symmetry and Persistent Spin Helix in a Spin-Orbit Coupled System
• Hidden spin polarization in inversion-symmetric bulk crystals
• Relativistic Neel-order fields induced by electrical current in antiferromagnets
• Direct observation of spin-polarised bulk bands in an inversion-symmetric semiconductor
• Promising Ferroelectricity in 2D Group IV Tellurides: a First-Principles Study
• Surface orbitronics: new twists from orbital Rashba physics
• Reversible spin texture in ferroelectric HfO2
• Hyperferroelectrics: proper ferroelectrics with persistent polarization
• Experimental observation of hidden Berry curvature in inversion-symmetric bulk 2H-WSe2
• Unconventional superconductivity in bilayer transition metal dichalcogenides
• Uncovering and tailoring hidden Rashba spin-orbit splitting in centrosymmetric crystals
• Intrinsic Origin of Enhancement of Ferroelectricity in SnTe Ultrathin Films
• Frustrated Dipole Order Induces Noncollinear Proper Ferrielectricity in Two Dimensions
• Orthorhombic $ABC$ semiconductors as antiferroelectrics
• Intrinsic circular polarization in centrosymmetric stacks of transition-metal dichalcogenides
• Antiferroelectric topological insulators in orthorhombic $A$MgBi compounds ($A=$ Li, Na, K)
• Hidden orbital polarization in diamond, silicon, germanium, gallium arsenide and layered materials
• Zeeman-type spin splitting in non-magnetic three-dimensional compounds: Materials prediction and electrical control
• Symmetry-assisted protection and compensation of hidden spin polarization in centrosymmetric systems
• Kramers' revenge

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• Hidden spin-orbital texture at the $\bar{\Gamma }$-located valence band maximum of a transition metal dichalcogenide semiconductor
• Two-dimensional Dirac semiconductor and its material realization
• Hidden Zeeman-type spin polarization in bulk crystals
• Enhanced in-plane ferroelectricity, antiferroelectricity, and unconventional 2D emergent fermions in QL-XSbO${}_2$ (X= Li, Na)