Gate tunable spin-charge interconversion in a graphene/ReS$_{2}$ heterostructure up to room temperature
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| Format: | Preprint |
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2025
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| _version_ | 1866918126368587776 |
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| author | Dolan, Eoin Chi, Zhendong Yang, Haozhe Hueso, Luis E. Casanova, Fèlix |
| author_facet | Dolan, Eoin Chi, Zhendong Yang, Haozhe Hueso, Luis E. Casanova, Fèlix |
| contents | Graphene is a material with great potential in the field of spintronics, combining good conductivity with low spin--orbit coupling (SOC), which allows for the transport of spin currents over long distances. However, this lack of SOC also limits the capacity for manipulating spin current. A key strategy to address this limitation is to induce SOC in graphene via proximity to other two-dimensional (2D) materials. Such proximity-induced SOC can enable spin--charge interconversion (SCI) in graphene, with potential applications in next-generation logic devices. Here, we place graphene in close proximity to the room-temperature ferroelectric candidate ReS$_\mathrm{2}$, inducing SCI for both in-plane and out-of-plane polarized spin current. We attribute the SCI for in-plane polarized current to either the Rashba--Edelstein effect (REE) or the unconventional spin Hall effect (SHE) at the graphene/ReS$_\mathrm{2}$ interface, and the SCI for out-of-plane polarized current to either the conventional SHE in the proximitised graphene, or the unconventional SHE in the bulk of the ReS$_\mathrm{2}$. SCI due to in-plane spin is characterised over a wide range of temperature, up to 300 K and a range of gate voltages. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_07888 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Gate tunable spin-charge interconversion in a graphene/ReS$_{2}$ heterostructure up to room temperature Dolan, Eoin Chi, Zhendong Yang, Haozhe Hueso, Luis E. Casanova, Fèlix Mesoscale and Nanoscale Physics Graphene is a material with great potential in the field of spintronics, combining good conductivity with low spin--orbit coupling (SOC), which allows for the transport of spin currents over long distances. However, this lack of SOC also limits the capacity for manipulating spin current. A key strategy to address this limitation is to induce SOC in graphene via proximity to other two-dimensional (2D) materials. Such proximity-induced SOC can enable spin--charge interconversion (SCI) in graphene, with potential applications in next-generation logic devices. Here, we place graphene in close proximity to the room-temperature ferroelectric candidate ReS$_\mathrm{2}$, inducing SCI for both in-plane and out-of-plane polarized spin current. We attribute the SCI for in-plane polarized current to either the Rashba--Edelstein effect (REE) or the unconventional spin Hall effect (SHE) at the graphene/ReS$_\mathrm{2}$ interface, and the SCI for out-of-plane polarized current to either the conventional SHE in the proximitised graphene, or the unconventional SHE in the bulk of the ReS$_\mathrm{2}$. SCI due to in-plane spin is characterised over a wide range of temperature, up to 300 K and a range of gate voltages. |
| title | Gate tunable spin-charge interconversion in a graphene/ReS$_{2}$ heterostructure up to room temperature |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2508.07888 |