Long-range current-induced spin accumulation in chiral crystals

Abstract

Chiral materials, similarly to human hands, have distinguishable right-handed and left-handed enantiomers which may behave differently in response to external stimuli. Here, we use for the first time an approach based on the density functional theory (DFT)+PAOFLOW calculations to quantitatively estimate the so-called collinear Rashba-Edelstein effect (REE) that generates spin accumulation parallel to charge current and can manifest as chirality-dependent charge-to-spin conversion in chiral crystals. Importantly, we reveal that the spin accumulation induced in the bulk by an electric current is intrinsically protected by the quasi-persistent spin helix arising from the crystal symmetries present in chiral systems with the Weyl spin-orbit coupling. In contrast to conventional REE, spin transport can be preserved over large distances, in agreement with the recent observations for some chiral materials. This allows, for example, the generation of spin currents from spin accumulation, opening novel routes for the design of solid-state spintronics devices.

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• Collinear Rashba-Edelstein effect in non-magnetic chiral materials
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• Diversity of Radial Spin Textures in Chiral Materials
• Spin Relaxation, Diffusion and Edelstein Effect in Chiral Metal Surface
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• Symmetry Origin and Microscopic Mechanism of Electrical Magnetochiral Anisotropy in Tellurium
• Efficient spin accumulation carried by slow relaxons in chiral tellurium
• Universal symmetry-protected persistent spin textures in nonmagnetic solids
• Persistent spin textures, altermagnetism and charge-to-spin conversion in metallic chiral crystals TM${}_3$X${}_6$
• Spin and orbital Edelstein effect in spin-orbit coupled noncentrosymmetric superconductor
• Predominant Electronic Order Parameter for Structural Chirality -- Role of Spinless Electronic Toroidal Multipoles
• Current-induced spin polarization at metallic surfaces from first-principles
• Matter with apparent and hidden spin physics
• Beyond spin-1/2: Multipolar spin-orbit coupling in noncentrosymmetric crystals with time-reversal symmetry
• High-Throughput Discovery of Two-Dimensional Materials Exhibiting Strong Rashba-Edelstein effect