Transport Property of Wrinkled Graphene Nanoribbon Tuned by Spin-Polarized Gate Made of Vanadium-Benzene Nanowire
A series of four-terminal V<sub>7</sub>(Bz)<sub>8</sub>-WGNR devices were established with wrinkled graphene nanoribbon (WGNR) and vanadium-benzene nanowire (V<sub>7</sub>(Bz)<sub>8</sub>). The spin-polarized V<sub>7</sub>(Bz)<sub>8&l...
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MDPI AG
2023-08-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/15/2270 |
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| author | Hong Yu Yan Shang Yangyang Hu Lei Pei Guiling Zhang |
| author_facet | Hong Yu Yan Shang Yangyang Hu Lei Pei Guiling Zhang |
| author_sort | Hong Yu |
| collection | DOAJ |
| description | A series of four-terminal V<sub>7</sub>(Bz)<sub>8</sub>-WGNR devices were established with wrinkled graphene nanoribbon (WGNR) and vanadium-benzene nanowire (V<sub>7</sub>(Bz)<sub>8</sub>). The spin-polarized V<sub>7</sub>(Bz)<sub>8</sub> as the gate channel was placed crossing the plane, the concave (endo-positioned) and the convex (endo-positioned) surface of WGNR with different curvatures via Van der Waals interaction. The density functional theory (DFT) and nonequilibrium Green’s function (NEGF) methods were adopted to calculate the transport properties of these devices at various bias voltages (<i>V</i><sub>S</sub>) and gate voltages (<i>V</i><sub>G</sub>), such as the conductance, spin-polarized currents, transmission spectra (TS), local density of states (LDOS), and scattering states. The results indicate that the position of V<sub>7</sub>(Bz)<sub>8</sub> and the bending curvature of WGNR play important roles in tuning the transport properties of these four-terminal devices. A spin-polarized transport property is induced for these four-terminal devices by the spin-polarized nature of V<sub>7</sub>(Bz)<sub>8</sub>. Particularly, the down-spin channel disturbs strongly on the source-to-drain conductance of WGNR when V<sub>7</sub>(Bz)<sub>8</sub> is endo-positioned crossing the WGNR. Our findings on the novel property of four-terminal V<sub>7</sub>(Bz)<sub>8</sub>-WGNR devices provide useful guidelines for achieving flexible graphene-based electronic nanodevices by attaching other similar multidecker metal-arene nanowires. |
| first_indexed | 2024-03-11T00:20:02Z |
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| language | English |
| last_indexed | 2024-03-11T00:20:02Z |
| publishDate | 2023-08-01 |
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| series | Nanomaterials |
| spelling | doaj.art-e82286c4e708464f9679412225b54cac2023-11-18T23:22:25ZengMDPI AGNanomaterials2079-49912023-08-011315227010.3390/nano13152270Transport Property of Wrinkled Graphene Nanoribbon Tuned by Spin-Polarized Gate Made of Vanadium-Benzene NanowireHong Yu0Yan Shang1Yangyang Hu2Lei Pei3Guiling Zhang4School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150080, ChinaSchool of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150080, ChinaSchool of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150080, ChinaSchool of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150080, ChinaSchool of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150080, ChinaA series of four-terminal V<sub>7</sub>(Bz)<sub>8</sub>-WGNR devices were established with wrinkled graphene nanoribbon (WGNR) and vanadium-benzene nanowire (V<sub>7</sub>(Bz)<sub>8</sub>). The spin-polarized V<sub>7</sub>(Bz)<sub>8</sub> as the gate channel was placed crossing the plane, the concave (endo-positioned) and the convex (endo-positioned) surface of WGNR with different curvatures via Van der Waals interaction. The density functional theory (DFT) and nonequilibrium Green’s function (NEGF) methods were adopted to calculate the transport properties of these devices at various bias voltages (<i>V</i><sub>S</sub>) and gate voltages (<i>V</i><sub>G</sub>), such as the conductance, spin-polarized currents, transmission spectra (TS), local density of states (LDOS), and scattering states. The results indicate that the position of V<sub>7</sub>(Bz)<sub>8</sub> and the bending curvature of WGNR play important roles in tuning the transport properties of these four-terminal devices. A spin-polarized transport property is induced for these four-terminal devices by the spin-polarized nature of V<sub>7</sub>(Bz)<sub>8</sub>. Particularly, the down-spin channel disturbs strongly on the source-to-drain conductance of WGNR when V<sub>7</sub>(Bz)<sub>8</sub> is endo-positioned crossing the WGNR. Our findings on the novel property of four-terminal V<sub>7</sub>(Bz)<sub>8</sub>-WGNR devices provide useful guidelines for achieving flexible graphene-based electronic nanodevices by attaching other similar multidecker metal-arene nanowires.https://www.mdpi.com/2079-4991/13/15/2270spin-polarizedfour-terminal devicewrinkled graphene nanoribbonV<sub>7</sub>(Bz)<sub>8</sub> |
| spellingShingle | Hong Yu Yan Shang Yangyang Hu Lei Pei Guiling Zhang Transport Property of Wrinkled Graphene Nanoribbon Tuned by Spin-Polarized Gate Made of Vanadium-Benzene Nanowire Nanomaterials spin-polarized four-terminal device wrinkled graphene nanoribbon V<sub>7</sub>(Bz)<sub>8</sub> |
| title | Transport Property of Wrinkled Graphene Nanoribbon Tuned by Spin-Polarized Gate Made of Vanadium-Benzene Nanowire |
| title_full | Transport Property of Wrinkled Graphene Nanoribbon Tuned by Spin-Polarized Gate Made of Vanadium-Benzene Nanowire |
| title_fullStr | Transport Property of Wrinkled Graphene Nanoribbon Tuned by Spin-Polarized Gate Made of Vanadium-Benzene Nanowire |
| title_full_unstemmed | Transport Property of Wrinkled Graphene Nanoribbon Tuned by Spin-Polarized Gate Made of Vanadium-Benzene Nanowire |
| title_short | Transport Property of Wrinkled Graphene Nanoribbon Tuned by Spin-Polarized Gate Made of Vanadium-Benzene Nanowire |
| title_sort | transport property of wrinkled graphene nanoribbon tuned by spin polarized gate made of vanadium benzene nanowire |
| topic | spin-polarized four-terminal device wrinkled graphene nanoribbon V<sub>7</sub>(Bz)<sub>8</sub> |
| url | https://www.mdpi.com/2079-4991/13/15/2270 |
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