Origin of Giant Rashba Effect in Graphene on Pt/SiC

IF 2.2 3区 综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES Symmetry-Basel Pub Date : 2023-11-12 DOI:10.3390/sym15112052
Anna A. Rybkina, Alevtina A. Gogina, Artem V. Tarasov, Ye Xin, Vladimir Yu. Voroshnin, Dmitrii A. Pudikov, Ilya I. Klimovskikh, Anatoly E. Petukhov, Kirill A. Bokai, Chengxun Yuan, Zhongxiang Zhou, Alexander M. Shikin, Artem G. Rybkin
{"title":"Origin of Giant Rashba Effect in Graphene on Pt/SiC","authors":"Anna A. Rybkina, Alevtina A. Gogina, Artem V. Tarasov, Ye Xin, Vladimir Yu. Voroshnin, Dmitrii A. Pudikov, Ilya I. Klimovskikh, Anatoly E. Petukhov, Kirill A. Bokai, Chengxun Yuan, Zhongxiang Zhou, Alexander M. Shikin, Artem G. Rybkin","doi":"10.3390/sym15112052","DOIUrl":null,"url":null,"abstract":"Intercalation of noble metals can produce giant Rashba-type spin–orbit splittings in graphene. The spin–orbit splitting of more than 100 meV has yet to be achieved in graphene on metal or semiconductor substrates. Here, we report the p-type graphene obtained by Pt intercalation of zero-layer graphene on SiC substrate. The spin splitting of ∼200 meV was observed at a wide range of binding energies. Comparing the results of theoretical studies of different models with the experimental ones measured by spin-ARPES, XPS and STM methods, we concluded that inducing giant spin–orbit splitting requires not only a relatively close distance between graphene and Pt layer but also the presence of graphene corrugation caused by a non-flat Pt layer. This makes it possible to find a compromise between strong hybridization and increased spin–orbit interaction. In our case, the Pt submonolayer possesses nanometer-scale lateral ordering under graphene.","PeriodicalId":48874,"journal":{"name":"Symmetry-Basel","volume":null,"pages":null},"PeriodicalIF":2.2000,"publicationDate":"2023-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Symmetry-Basel","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3390/sym15112052","RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MULTIDISCIPLINARY SCIENCES","Score":null,"Total":0}
引用次数: 0

Abstract

Intercalation of noble metals can produce giant Rashba-type spin–orbit splittings in graphene. The spin–orbit splitting of more than 100 meV has yet to be achieved in graphene on metal or semiconductor substrates. Here, we report the p-type graphene obtained by Pt intercalation of zero-layer graphene on SiC substrate. The spin splitting of ∼200 meV was observed at a wide range of binding energies. Comparing the results of theoretical studies of different models with the experimental ones measured by spin-ARPES, XPS and STM methods, we concluded that inducing giant spin–orbit splitting requires not only a relatively close distance between graphene and Pt layer but also the presence of graphene corrugation caused by a non-flat Pt layer. This makes it possible to find a compromise between strong hybridization and increased spin–orbit interaction. In our case, the Pt submonolayer possesses nanometer-scale lateral ordering under graphene.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
Pt/SiC上石墨烯中巨大拉什巴效应的起源
嵌入贵金属可以在石墨烯中产生巨大的rashba型自旋轨道分裂。超过100 meV的自旋轨道分裂在金属或半导体基底上的石墨烯中尚未实现。本文报道了在SiC衬底上Pt嵌入零层石墨烯获得的p型石墨烯。在较宽的结合能范围内观察到~ 200 meV的自旋分裂。将不同模型的理论研究结果与自旋- arpes、XPS和STM方法测量的实验结果进行比较,我们得出结论,诱导巨大的自旋-轨道分裂不仅需要石墨烯与Pt层之间相对较近的距离,还需要由非平坦Pt层引起的石墨烯波纹的存在。这使得在强杂化和增加的自旋轨道相互作用之间找到一个折衷方案成为可能。在我们的研究中,铂亚单层在石墨烯下具有纳米级的横向有序。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Symmetry-Basel
Symmetry-Basel MULTIDISCIPLINARY SCIENCES-
CiteScore
5.40
自引率
11.10%
发文量
2276
审稿时长
14.88 days
期刊介绍: Symmetry (ISSN 2073-8994), an international and interdisciplinary scientific journal, publishes reviews, regular research papers and short notes. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. There is no restriction on the length of the papers. Full experimental and/or methodical details must be provided, so that results can be reproduced.
期刊最新文献
The Chromatic Entropy of Linear Supertrees and Its Application Angular-Momentum Modes in a Bosonic Condensate Trapped in the Inverse-Square Potential Development of Compact Bandpass Filter Using Symmetrical Metamaterial Structures for GPS, ISM, Wi-MAX, and WLAN Applications Entanglement and Symmetry Structure of N(= 3) Quantum Oscillators with Disparate Coupling Strengths in a Common Quantum Field Bath Nuclear Shape-Phase Transitions and the Sextic Oscillator
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1