Dyakonov-Perel-like Orbital and Spin Relaxations in Centrosymmetric Systems.
Phys Rev Lett
; 132(24): 246301, 2024 Jun 14.
Article
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| MEDLINE
| ID: mdl-38949365
ABSTRACT
The Dyakonov-Perel (DP) mechanism of spin relaxation has long been considered irrelevant in centrosymmetric systems since it was developed originally for noncentrosymmetric ones. We investigate whether this conventional understanding extends to the realm of orbital relaxation, which has recently attracted significant attention. Surprisingly, we find that orbital relaxation in centrosymmetric systems exhibits the DP-like behavior in the weak scattering regime. Moreover, the DP-like orbital relaxation can make the spin relaxation in centrosymmetric systems DP-like through the spin-orbit coupling. We also find that the DP-like orbital and spin relaxations are anisotropic even in materials with high crystal symmetry (such as face-centered cubic structure) and may depend on the orbital and spin nature of electron wave functions.
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01-internacional
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MEDLINE
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En
Revista:
Phys Rev Lett
Año:
2024
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Article