Theoretical studies of topological and electron correlation effects in graphene
石墨烯拓扑和电子相关效应的理论研究
基本信息
- 批准号:22740196
- 负责人:
- 金额:$ 2万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Young Scientists (B)
- 财政年份:2010
- 资助国家:日本
- 起止时间:2010-04-01 至 2014-03-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
I studied electronic and topological properties of graphene and silicene (graphene's cousin).In particular, I analyzed various topological insulators and their topological phase transitions. Main results read as follows: The zero-energy sector of the triangular zigzag graphene is investigated based on the Dirac theory of graphene.Analytic wave functions of triangular graphene are obtained. A vortex with the winding number 2 emerges in triangular graphene. Graphene nanodisk arrays have multi-degenerate perfect flat bands and are ferromagnet. The band gap of silicene can be controlled by external electric field applied perpendicular to silicene. Silicene shows the quantum anomalous-Hall effect when ferromagnet is attached. Furthermore, silicene undergoes a topological phase transition by photo-irradiation, where single-Dirac cone states appear at the critical point.I also studied the skyrmion, which is a topological structure in magnet.
我研究了石墨烯和硅(石墨烯的表弟)的电子和拓扑特性。尤其是我分析了各种拓扑绝缘子及其拓扑相变。主要结果如下:基于狄拉克石墨烯的狄拉克论理论,研究了三角形锯齿形石墨烯的零能源扇形。三角形石墨烯中出现了带有绕组2的涡流。石墨烯纳米数阵列具有多分化的完美平坦带,并且是铁磁体。可以通过垂直于硅硅的外部电场来控制硅的带隙。当连接铁磁铁时,硅烯显示了量子异常的效应。此外,硅烯通过光辐射进行了拓扑相变,单迪拉克锥态出现在临界点上。我还研究了Skyrmion,这是磁铁中的拓扑结构。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Giant Skyrmions Stabilized by Dipole-Dipole Interactions in Thin Ferromagnetic Films
- DOI:10.1103/physrevlett.105.197202
- 发表时间:2010-11-02
- 期刊:
- 影响因子:8.6
- 作者:Ezawa, Motohiko
- 通讯作者:Ezawa, Motohiko
Skyrmion Burst and Multiple Quantum Walk in Thin Ferromagnetic Films
铁磁薄膜中的斯格明子爆发和多重量子行走
- DOI:10.1016/j.physleta.2011.08.030
- 发表时间:2011
- 期刊:
- 影响因子:0
- 作者:渡邊浩;ニコラ・ブレフェル,毛利真一郎,ジャン・ピエール・ツシャゲ;エリック・コレ、田中耕一郎;M. Ezawa;H.Watanabe;M. Ezawa;秋月直人;毛利真一郎;M. Ezawa;岩村宗千代;M. Ezawa;毛利真一郎;M. Ezawa;秋月直人;岩村宗千代;M. Ezawa;毛利真一郎;M. Ezawa
- 通讯作者:M. Ezawa
Compact merons and skyrmions in thin chiral magnetic films
- DOI:10.1103/physrevb.83.100408
- 发表时间:2011-03-18
- 期刊:
- 影响因子:3.7
- 作者:Ezawa, Motohiko
- 通讯作者:Ezawa, Motohiko
Quantum Hall Effects in Silicene
- DOI:10.1143/jpsj.81.064705
- 发表时间:2012-06-01
- 期刊:
- 影响因子:1.7
- 作者:Ezawa, Motohiko
- 通讯作者:Ezawa, Motohiko
シリセンにおけるトポロジカル絶縁体
硅烯中的拓扑绝缘体
- DOI:
- 发表时间:2012
- 期刊:
- 影响因子:0
- 作者:山影相;江澤雅彦;田仲由喜夫;永長直人;毛利真一郎;M. Ezawa;毛利真一郎;M. Ezawa;宮内雄平;Motohiko Ezawa;岩村宗千代;Motohiko Ezawa;小澤大知;山影相,江澤雅彦,田仲由喜夫,永長直人;秋月直人;江澤雅彦
- 通讯作者:江澤雅彦
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EZAWA Motohiko的其他基金
Nanoelectronics and Spintronics on Graphene
石墨烯纳米电子学和自旋电子学
- 批准号:2084001120840011
- 财政年份:2008
- 资助金额:$ 2万$ 2万
- 项目类别:Grant-in-Aid for Young Scientists (Start-up)Grant-in-Aid for Young Scientists (Start-up)
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- 财政年份:2020
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Silicene surrounded by oxide -quality improvement and its application to transistors
氧化物包围硅烯的质量改进及其在晶体管中的应用
- 批准号:17KK012517KK0125
- 财政年份:2018
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