Emergence of giant orbital Hall and tunable spin Hall effects in centrosymmetric TMDs
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866909207176937472 |
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| author | Sahu, Pratik Bidika, Jatin Kumar Biswal, Bubunu Satpathy, S. Nanda, B. R. K. |
| author_facet | Sahu, Pratik Bidika, Jatin Kumar Biswal, Bubunu Satpathy, S. Nanda, B. R. K. |
| contents | We demonstrate the formation of orbital and spin Hall effects (OHE/SHE) in the 1T phase of non-magnetic transition metal dichalcogenides. With the aid of density functional theory calculations and model Hamiltonian studies on MX$_2$ (M = Pt, Pd and X = S, Se, and Te), we show an intrinsic orbital Hall conductivity ($\sim 10^3 \hbar /e\ Ω^{-1}cm^{-1}$) , which primarily emerges due to the orbital texture around the valleys in the momentum space. The robust spin-orbit coupling in these systems induces a sizable SHE out of OHE. Furthermore, to resemble the typical experimental setups, where the magnetic overlayers produce a proximity magnetic field, we examine the effect of magnetic field on OHE and SHE and showed that the latter can be doubled in these class of compounds. With a giant OHE and tunable SHE, the 1T-TMDs are promising candidates for spin and orbital driven quantum devices such as SOT-MRAM, spin nano-oscillators, spin logic devices etc., and to carry out spin-charge conversion experiments for fundamental research. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_11892 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Emergence of giant orbital Hall and tunable spin Hall effects in centrosymmetric TMDs Sahu, Pratik Bidika, Jatin Kumar Biswal, Bubunu Satpathy, S. Nanda, B. R. K. Mesoscale and Nanoscale Physics We demonstrate the formation of orbital and spin Hall effects (OHE/SHE) in the 1T phase of non-magnetic transition metal dichalcogenides. With the aid of density functional theory calculations and model Hamiltonian studies on MX$_2$ (M = Pt, Pd and X = S, Se, and Te), we show an intrinsic orbital Hall conductivity ($\sim 10^3 \hbar /e\ Ω^{-1}cm^{-1}$) , which primarily emerges due to the orbital texture around the valleys in the momentum space. The robust spin-orbit coupling in these systems induces a sizable SHE out of OHE. Furthermore, to resemble the typical experimental setups, where the magnetic overlayers produce a proximity magnetic field, we examine the effect of magnetic field on OHE and SHE and showed that the latter can be doubled in these class of compounds. With a giant OHE and tunable SHE, the 1T-TMDs are promising candidates for spin and orbital driven quantum devices such as SOT-MRAM, spin nano-oscillators, spin logic devices etc., and to carry out spin-charge conversion experiments for fundamental research. |
| title | Emergence of giant orbital Hall and tunable spin Hall effects in centrosymmetric TMDs |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2405.11892 |