Intrinsic anomalous, spin and valley Hall effects in ex-so-tic van-der-Waals structures
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arXiv
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| Format: | Preprint |
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2024
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| author | Wojciechowska, I. Dyrdal, A. |
| author_facet | Wojciechowska, I. Dyrdal, A. |
| contents | We consider the anomalous, spin, valley, and valley spin Hall effects in a pristine ex-so-tic graphene-based van-der-Waals (vdW) heterostructure consisting of a bilayer graphene (BLG) between semiconducting van-der-Waals material with strong SOC (e.g., WS$_2$) and ferromagnetic and insulating vdW material (e.g. Cr$_2$Ge$_2$Te$_6$). Reducing the effective Hamiltonian derived by Zollner et al [Phys. Rev. Lett. 125(19), 196402 (2020)] to low-energy states, and using the Green function formalism, we derived analytical results for the Hall conductivities as a function of the Fermi level and gate voltage. Depending on these parameters, we found quantized valley conductivity. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2404_13451 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Intrinsic anomalous, spin and valley Hall effects in ex-so-tic van-der-Waals structures Wojciechowska, I. Dyrdal, A. Mesoscale and Nanoscale Physics We consider the anomalous, spin, valley, and valley spin Hall effects in a pristine ex-so-tic graphene-based van-der-Waals (vdW) heterostructure consisting of a bilayer graphene (BLG) between semiconducting van-der-Waals material with strong SOC (e.g., WS$_2$) and ferromagnetic and insulating vdW material (e.g. Cr$_2$Ge$_2$Te$_6$). Reducing the effective Hamiltonian derived by Zollner et al [Phys. Rev. Lett. 125(19), 196402 (2020)] to low-energy states, and using the Green function formalism, we derived analytical results for the Hall conductivities as a function of the Fermi level and gate voltage. Depending on these parameters, we found quantized valley conductivity. |
| title | Intrinsic anomalous, spin and valley Hall effects in ex-so-tic van-der-Waals structures |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2404.13451 |