Unconventional spin textures emerging from a universal symmetry theory of spin-momentum locking

Abstract

Spin textures, i.e., the distribution of spin polarization vectors in reciprocal space, exhibit diverse patterns determined by symmetry constraints, resulting in a variety of spintronic phenomena. Here, we propose a universal theory to comprehensively describe the nature of spin textures by incorporating three symmetry flavors of reciprocal wavevector, atomic orbital and atomic site. Such approach enables us to establish a complete classification of spin textures constrained by the little co-group and predict unprecedentedly reported spin texture types, such as Zeeman-type spin splitting in antiferromagnets and quadratic spin texture. To illustrate the influence of atomic orbitals and sites on spin textures, we predict orbital-dependent spin texture and anisotropic spin-momentum-site locking effects, and corresponding material candidates validated through first-principles calculations. The comprehensive classification and the predicted new spin textures in realistic materials are expected to trigger future spin-based functionalities in electronics.

18 pages, 4 figures, 1 table

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Cited by in corpus (8)

• Catalogue of $C$-paired spin-momentum locking in antiferromagnetic systems
• Unconventional Spintronics from Chiral Perovskites
• Symmetry Classification for Alternating Excitons in Two-Dimensional Altermagnets
• Understanding spin textures in PT-broken systems through universal symmetry-constrained rules
• Zeeman-type spin splittings in strained d-wave altermagnets
• Investigating Quantum Spin-Textures Using Universal MJ Hamiltonians
• Quantized Spin Hall Effect in Three-Dimensional Nodal-Ring Semimetal: Geometric Scaling and Symmetry-Engineered Spin Response
• High-Throughput Discovery of Two-Dimensional Materials Exhibiting Strong Rashba-Edelstein effect