Golub, Leonid E. and Ivchenko, Eougenious L. (2025) Hanle effect in current-induced spin orientation. PHYSICAL REVIEW B, 111 (4): L041407. ISSN 2469-9950, 2469-9969
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Electrical spin orientation is the generation of electron spin proportional to the electric current. This phenomenon is allowed by symmetry in gyrotropic systems, e.g., in inversion-asymmetric structures with Rashba spin-orbit splitting. Here we develop a theory of electrical spin orientation for magnetic two-dimensional heterostructures. Spin-orbit coupled graphene and semiconductor heterostructures proximitized by ferromagnets are considered. The analytical theory is based on the Boltzmann kinetic equation for a spin-dependent distribution function and collision integral. We show that the induced spin demonstrates the Hanle effect: a direction of the spin depends on the out-of-plane magnetization. Importantly, the Hanle effect is extremely sensitive to the details of electron elastic scattering. In semiconductor heterostructures, the effect of magnetization is present for scattering by long-range disorder and absent for short-range scattering. In spin-orbit-coupled graphene, the Hanle effect occurs at any scattering potential, but the direction of the spin strongly changes with variation of the disorder type. The theory also describes the effect of valley-Zeeman splitting on the electrical spin orientation in graphene, where the spin experiences opposite Hanle effects in two valleys.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | POLARIZATION; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Prof. Jörg Wunderlich |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 16 Jun 2026 08:48 |
| Last Modified: | 16 Jun 2026 08:48 |
| URI: | https://pred.uni-regensburg.de/id/eprint/66095 |
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