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  • Title: Emerging Spin-Orbit Torques in Low-Dimensional Dirac Materials.
    Author: Medina Dueñas J, García JH, Roche S.
    Journal: Phys Rev Lett; 2024 Jun 28; 132(26):266301. PubMed ID: 38996304.
    Abstract:
    We report a theoretical description of novel spin-orbit torque components emerging in two-dimensional Dirac materials with broken inversion symmetry. In contrast to usual metallic interfaces where fieldlike and dampinglike torque components are competing, we find that an intrinsic dampinglike torque which derives from all Fermi-sea electrons can be simultaneously enhanced along with the fieldlike component. Additionally, hitherto overlooked torque components unique to Dirac materials emerge from the coupling between spin and pseudospin angular momenta, leading to spin-pseudospin entanglement. These torques are found to be resilient to disorder and could enhance the magnetic switching performance of nearby magnets.
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