{"title":"二维石墨炔/VI3范德华异质结构的可调谐电子结构和磁性","authors":"Nan Sun, Baozeng Zhou, Xiaocha Wang","doi":"10.1016/j.spmi.2021.107081","DOIUrl":null,"url":null,"abstract":"<div><p><span>Due to the excellent properties of two-dimensional (2D) magnetic materials, 2D van der Waals magnetic heterostructures<span> have obtained more research in nanoelectronics<span>. In this work, the electronic and magnetic properties in 2D graphyne/VI</span></span></span><sub>3</sub> (<em>γ</em>-GY/VI<sub>3</sub>) magnetic heterostructures have been elaborately examined on account of first-principles calculations. As shown by the research results, semiconductor or half-metallic characteristic of VI<sub>3</sub> monolayer in <em>γ</em>-GY/VI<sub>3</sub><span> heterostructures may be exhibited due to the difference in stacking pattern. Furthermore, the formation of heterostructures significantly enhances the perpendicular magnetic anisotropy (PMA) of VI</span><sub>3</sub> monolayer. At compressive strains, VI<sub>3</sub> monolayer of <em>γ</em>-GY/VI<sub>3</sub><span> heterostructure realizes a shift from semiconductor to metal characteristic, and this significantly enhances the electrical conductivity of VI</span><sub>3</sub> monolayer. Moreover, through shortening the interlayer distance in <em>γ</em>-GY/VI<sub>3</sub> heterostructures, the spin-up half-metallic state appears in VI<sub>3</sub> monolayer. Both compressive strains and interlayer distance can also enhance the interlayer interaction, charge transfer and PMA of <em>γ</em>-GY/VI<sub>3</sub> heterostructure. These tunable electronic properties show that <em>γ</em>-GY/VI<sub>3</sub><span> heterostructures can become potential alternatives applicable to nanoelectronic and spintronic device design.</span></p></div>","PeriodicalId":22044,"journal":{"name":"Superlattices and Microstructures","volume":null,"pages":null},"PeriodicalIF":3.3000,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":"{\"title\":\"Tunable electronic structure and magnetic characteristics of two-dimensional graphyne/VI3 van der Waals heterostructures\",\"authors\":\"Nan Sun, Baozeng Zhou, Xiaocha Wang\",\"doi\":\"10.1016/j.spmi.2021.107081\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p><span>Due to the excellent properties of two-dimensional (2D) magnetic materials, 2D van der Waals magnetic heterostructures<span> have obtained more research in nanoelectronics<span>. In this work, the electronic and magnetic properties in 2D graphyne/VI</span></span></span><sub>3</sub> (<em>γ</em>-GY/VI<sub>3</sub>) magnetic heterostructures have been elaborately examined on account of first-principles calculations. As shown by the research results, semiconductor or half-metallic characteristic of VI<sub>3</sub> monolayer in <em>γ</em>-GY/VI<sub>3</sub><span> heterostructures may be exhibited due to the difference in stacking pattern. Furthermore, the formation of heterostructures significantly enhances the perpendicular magnetic anisotropy (PMA) of VI</span><sub>3</sub> monolayer. At compressive strains, VI<sub>3</sub> monolayer of <em>γ</em>-GY/VI<sub>3</sub><span> heterostructure realizes a shift from semiconductor to metal characteristic, and this significantly enhances the electrical conductivity of VI</span><sub>3</sub> monolayer. Moreover, through shortening the interlayer distance in <em>γ</em>-GY/VI<sub>3</sub> heterostructures, the spin-up half-metallic state appears in VI<sub>3</sub> monolayer. Both compressive strains and interlayer distance can also enhance the interlayer interaction, charge transfer and PMA of <em>γ</em>-GY/VI<sub>3</sub> heterostructure. These tunable electronic properties show that <em>γ</em>-GY/VI<sub>3</sub><span> heterostructures can become potential alternatives applicable to nanoelectronic and spintronic device design.</span></p></div>\",\"PeriodicalId\":22044,\"journal\":{\"name\":\"Superlattices and Microstructures\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.3000,\"publicationDate\":\"2021-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Superlattices and Microstructures\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0749603621002792\",\"RegionNum\":3,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"PHYSICS, CONDENSED MATTER\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Superlattices and Microstructures","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0749603621002792","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, CONDENSED MATTER","Score":null,"Total":0}
Tunable electronic structure and magnetic characteristics of two-dimensional graphyne/VI3 van der Waals heterostructures
Due to the excellent properties of two-dimensional (2D) magnetic materials, 2D van der Waals magnetic heterostructures have obtained more research in nanoelectronics. In this work, the electronic and magnetic properties in 2D graphyne/VI3 (γ-GY/VI3) magnetic heterostructures have been elaborately examined on account of first-principles calculations. As shown by the research results, semiconductor or half-metallic characteristic of VI3 monolayer in γ-GY/VI3 heterostructures may be exhibited due to the difference in stacking pattern. Furthermore, the formation of heterostructures significantly enhances the perpendicular magnetic anisotropy (PMA) of VI3 monolayer. At compressive strains, VI3 monolayer of γ-GY/VI3 heterostructure realizes a shift from semiconductor to metal characteristic, and this significantly enhances the electrical conductivity of VI3 monolayer. Moreover, through shortening the interlayer distance in γ-GY/VI3 heterostructures, the spin-up half-metallic state appears in VI3 monolayer. Both compressive strains and interlayer distance can also enhance the interlayer interaction, charge transfer and PMA of γ-GY/VI3 heterostructure. These tunable electronic properties show that γ-GY/VI3 heterostructures can become potential alternatives applicable to nanoelectronic and spintronic device design.
期刊介绍:
Micro and Nanostructures is a journal disseminating the science and technology of micro-structures and nano-structures in materials and their devices, including individual and collective use of semiconductors, metals and insulators for the exploitation of their unique properties. The journal hosts papers dealing with fundamental and applied experimental research as well as theoretical studies. Fields of interest, including emerging ones, cover:
• Novel micro and nanostructures
• Nanomaterials (nanowires, nanodots, 2D materials ) and devices
• Synthetic heterostructures
• Plasmonics
• Micro and nano-defects in materials (semiconductor, metal and insulators)
• Surfaces and interfaces of thin films
In addition to Research Papers, the journal aims at publishing Topical Reviews providing insights into rapidly evolving or more mature fields. Written by leading researchers in their respective fields, those articles are commissioned by the Editorial Board.
Formerly known as Superlattices and Microstructures, with a 2021 IF of 3.22 and 2021 CiteScore of 5.4