Hui Liu, Heng Wang, Zhisheng Peng, Jiyou Jin, Zhongpu Wang, Kang Peng, Wenxiang Wang, Yushi Xu, Yu Wang, Zheng Wei, Ding Zhang, Yong Jun Li, Weiguo Chu and Lianfeng Sun
{"title":"边键单层石墨烯†中的异常霍尔效应","authors":"Hui Liu, Heng Wang, Zhisheng Peng, Jiyou Jin, Zhongpu Wang, Kang Peng, Wenxiang Wang, Yushi Xu, Yu Wang, Zheng Wei, Ding Zhang, Yong Jun Li, Weiguo Chu and Lianfeng Sun","doi":"10.1039/D3NH00233K","DOIUrl":null,"url":null,"abstract":"<p >An anomalous Hall effect (AHE) is usually presumed to be absent in pristine graphene due to its diamagnetism. In this work, we report that a gate-tunable Hall resistance <em>R</em><small><sub><em>xy</em></sub></small> can be obtained in edge-bonded monolayer graphene without an external magnetic field. In a perpendicular magnetic field, <em>R</em><small><sub><em>xy</em></sub></small> consists of a sum of two terms: one from the ordinary Hall effect and the other from the AHE (<em>R</em><small><sub>AHE</sub></small>). Plateaus of <em>R</em><small><sub><em>xy</em></sub></small> ∼ 0.94<em>h</em>/3<em>e</em><small><sup>2</sup></small> and <em>R</em><small><sub>AHE</sub></small> ∼ 0.88<em>h</em>/3<em>e</em><small><sup>2</sup></small> have been observed while the longitudinal resistance <em>R</em><small><sub><em>xx</em></sub></small> decreases at a temperature of 2 K, which are indications of the quantum version of the AHE. At a temperature of 300 K, <em>R</em><small><sub><em>xx</em></sub></small> shows a positive, giant magnetoresistance of ∼177% and <em>R</em><small><sub>AHE</sub></small> still has a value of ∼400 Ω. These observations indicate the existence of a long-range ferromagnetic order in pristine graphene, which may lead to new applications in pure carbon-based spintronics.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 9","pages":" 1235-1242"},"PeriodicalIF":6.6000,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"An anomalous Hall effect in edge-bonded monolayer graphene†\",\"authors\":\"Hui Liu, Heng Wang, Zhisheng Peng, Jiyou Jin, Zhongpu Wang, Kang Peng, Wenxiang Wang, Yushi Xu, Yu Wang, Zheng Wei, Ding Zhang, Yong Jun Li, Weiguo Chu and Lianfeng Sun\",\"doi\":\"10.1039/D3NH00233K\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >An anomalous Hall effect (AHE) is usually presumed to be absent in pristine graphene due to its diamagnetism. In this work, we report that a gate-tunable Hall resistance <em>R</em><small><sub><em>xy</em></sub></small> can be obtained in edge-bonded monolayer graphene without an external magnetic field. In a perpendicular magnetic field, <em>R</em><small><sub><em>xy</em></sub></small> consists of a sum of two terms: one from the ordinary Hall effect and the other from the AHE (<em>R</em><small><sub>AHE</sub></small>). Plateaus of <em>R</em><small><sub><em>xy</em></sub></small> ∼ 0.94<em>h</em>/3<em>e</em><small><sup>2</sup></small> and <em>R</em><small><sub>AHE</sub></small> ∼ 0.88<em>h</em>/3<em>e</em><small><sup>2</sup></small> have been observed while the longitudinal resistance <em>R</em><small><sub><em>xx</em></sub></small> decreases at a temperature of 2 K, which are indications of the quantum version of the AHE. At a temperature of 300 K, <em>R</em><small><sub><em>xx</em></sub></small> shows a positive, giant magnetoresistance of ∼177% and <em>R</em><small><sub>AHE</sub></small> still has a value of ∼400 Ω. These observations indicate the existence of a long-range ferromagnetic order in pristine graphene, which may lead to new applications in pure carbon-based spintronics.</p>\",\"PeriodicalId\":93,\"journal\":{\"name\":\"Nanoscale Horizons\",\"volume\":\" 9\",\"pages\":\" 1235-1242\"},\"PeriodicalIF\":6.6000,\"publicationDate\":\"2023-06-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nanoscale Horizons\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2023/nh/d3nh00233k\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nanoscale Horizons","FirstCategoryId":"88","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2023/nh/d3nh00233k","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
An anomalous Hall effect in edge-bonded monolayer graphene†
An anomalous Hall effect (AHE) is usually presumed to be absent in pristine graphene due to its diamagnetism. In this work, we report that a gate-tunable Hall resistance Rxy can be obtained in edge-bonded monolayer graphene without an external magnetic field. In a perpendicular magnetic field, Rxy consists of a sum of two terms: one from the ordinary Hall effect and the other from the AHE (RAHE). Plateaus of Rxy ∼ 0.94h/3e2 and RAHE ∼ 0.88h/3e2 have been observed while the longitudinal resistance Rxx decreases at a temperature of 2 K, which are indications of the quantum version of the AHE. At a temperature of 300 K, Rxx shows a positive, giant magnetoresistance of ∼177% and RAHE still has a value of ∼400 Ω. These observations indicate the existence of a long-range ferromagnetic order in pristine graphene, which may lead to new applications in pure carbon-based spintronics.
期刊介绍：
Nanoscale Horizons stands out as a premier journal for publishing exceptionally high-quality and innovative nanoscience and nanotechnology. The emphasis lies on original research that introduces a new concept or a novel perspective (a conceptual advance), prioritizing this over reporting technological improvements. Nevertheless, outstanding articles showcasing truly groundbreaking developments, including record-breaking performance, may also find a place in the journal. Published work must be of substantial general interest to our broad and diverse readership across the nanoscience and nanotechnology community.
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