Bibliographic Details
| Title: |
Spin Hall effect in monolayer black phosphorus. |
| Authors: |
Zhao, Yiqing1 (AUTHOR), Zhou, Xiaoying1 (AUTHOR) xyzhou@hnust.edu.cn |
| Source: |
European Physical Journal B: Condensed Matter. May2026, Vol. 99 Issue 5, p1-5. 5p. |
| Subjects: |
Spin Hall effect, Spintronics, Phosphorene, Band gaps, Nanoelectronics, Anisotropy, Curvature, Charge carrier mobility |
| Abstract: |
Monolayer black phosphorus (BP), characterized by its direct band gap, high carrier mobility, and pronounced in-plane anisotropy, offers a versatile platform for next-generation nanoelectronic devices. Despite the symmetry-enforced vanishing Berry curvature due to the coexistence of inversion and time-reversal symmetries, we demonstrate that monolayer BP hosts a spin-resolved Berry curvature that drives the intrinsic spin Hall effect. Using a four-band k · p Hamiltonian, we analytically derive the spin-resolved Berry curvature and the orbital magnetic moment. Both quantities peak at the Γ point and exhibit significant anisotropy, decaying more rapidly along the k y direction than the k x direction. Furthermore, the spin Hall conductivity displays a plateau within the band gap that remains robust against temperature fluctuations due to BP's large energy gap. Finally, we identify a finite circular polarization along the k x direction as a potential experimental signature for detecting this spin-resolved Berry curvature. Our results establish monolayer BP as a promising candidate for spintronics. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
