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- W4297383674 abstract "The implementation of the quantum spin-valley Hall effect is a critical challenge for the spintronics and valleytronic experimentalists because it requires breaking both time-reversal symmetry ($mathcal{T}$) and spatial inversion symmetry ($mathcal{P}$) while preserving the joint symmetry $mathcal{O}=mathcal{T}mathcal{P}$. Here, we demonstrate an extrinsic spin-valley Hall effect by the magnetic field and temperature modulation of the nonlocal resistance in a Hall bar device consisting of magnetized and strained graphene. Besides, we achieve a striking crossover from positive to negative nonlocal magnetoresistance owing to the magnetic field dependence of spin-valley relaxation instead of the usual Hanle spin precession. Moreover, we microscopically derive a large and tunable spin-relaxation anisotropy of the magnetized graphene within the Born-Markov and the Weiss-field approximations. Our findings offer fascinating opportunities to manipulate the spin and valley degrees of freedom and design novel electronic devices." @default.
- W4297383674 created "2022-09-28" @default.
- W4297383674 creator A5004303798 @default.
- W4297383674 date "2022-09-27" @default.
- W4297383674 modified "2023-10-03" @default.
- W4297383674 title "Extrinsic spin-valley Hall effect and spin-relaxation anisotropy in magnetized and strained graphene" @default.
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- W4297383674 doi "https://doi.org/10.1103/physrevb.106.115437" @default.
- W4297383674 hasPublicationYear "2022" @default.
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