Hidden Zeeman-type spin polarization in bulk crystals

Abstract

Exploring hidden effects that have been overlooked given the nominal global crystal symmetry but are indeed visible in solid-state materials has been a fascinating subject of research recently. Here, we introduce a novel hidden Zeeman-type spin polarization (HZSP) in nonmagnetic bulk crystals with sublattice structures. In the momentum space of these crystals, the doubly degenerate bands formed in a certain plane can exhibit a uniform spin configuration with opposite spin orientations perpendicular to this plane, whereas such degenerate states are spatially separated in a pair of real-space sectors. Interestingly, we find that HZSP can manifest itself in both centrosymmetric and non-centrosymmetric materials. We further demonstrate the important role of nonsymmorphic twofold screw-rotational symmetry played in the formation of HZSP. Moreover, two representative material examples, i.e., centrosymmetric WSe${}_2$ and noncentrosymmetric BaBi${}_4$O${}_7$, are identified to show HZSP via first-principles calculations. Our finding thus not only opens new perspectives for hidden spin polarization research but also significantly broadens the range of materials towards spintronics applications.

arXiv comment5 pages, 3 figures

References in corpus (28)

• Van der Waals Density Functional for General Geometries
• Spin Hall effect
• New Perspectives for Rashba Spin-Orbit Coupling
• An Exact SU(2) Symmetry and Persistent Spin Helix in a Spin-Orbit Coupled System
• Emergence of the persistent spin helix in semiconductor quantum wells
• Hidden spin polarization in inversion-symmetric bulk crystals
• Direct observation of spin-polarised bulk bands in an inversion-symmetric semiconductor
• Nodal surface semimetals: Theory and material realization
• Node-Surface and Node-Line Fermions From Nonsymmorphic Lattice Symmetries
• Direct mapping of the formation of a persistent spin helix: Supplementary information
• Towards Three-Dimensional Weyl-SurfaceSemimetals in Graphene Networks
• Persistent Spin Textures in Semiconductor Nanostructures
• Persistent spin texture enforced by symmetry
• Valley-Layer Coupling: A New Design Principle for Valleytronics
• Direct determination of spin orbit interaction coefficients and realization of the persistent spin helix symmetry
• Reversible spin texture in ferroelectric HfO2
• 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 circular polarization in centrosymmetric stacks of transition-metal dichalcogenides
• Direct evidence of hidden local spin polarization in a centrosymmetric superconductor LaO${}_{0.55}$F${}_{0.45}$BiS${}_2$
• Control of Spin Helix Symmetry in Semiconductor Quantum Wells by Crystal Orientation
• Hidden orbital polarization in diamond, silicon, germanium, gallium arsenide and layered materials
• Hidden Physical Effects in Non-centrosymmetric Crystals
• Electrically switchable hidden spin polarization in antiferroelectric crystals
• Hidden anomalous Hall effect in Sr${}_2$RuO${}_4$ with chiral superconductivity dominated by the Ru $d_{xy}$ orbital
• Kramers' revenge
• NMR in an electric field: A bulk probe of the hidden spin and orbital polarizations

Cited by in corpus (3)

• Universal symmetry-protected persistent spin textures in nonmagnetic solids
• Understanding spin textures in PT-broken systems through universal symmetry-constrained rules
• Matter with apparent and hidden spin physics