中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 合肥物质科学研究院
  3. 中国科学院合肥物质科学研究院
Topologically nontrivial interband plasmons in type-II Weyl semimetal MoTe2

文献类型：期刊论文

作者Jia, Xun1,2,3; Wang, Maoyuan4; Yan, Dayu1,2,3; Xue, Siwei1,2,3; Zhang, Shuyuan1,2,3; Zhou, Jianhui5; Shi, Youguo1,2,6; Zhu, Xuetao1,2,3,6; Yao, Yugui4; Guo, Jiandong1,2,3,6,7
刊名NEW JOURNAL OF PHYSICS
出版日期2020-10-01
卷号22
关键词plasmon topological semimetal high resolution electron energy loss spectroscopy
ISSN号1367-2630
DOI10.1088/1367-2630/abbca5
通讯作者Zhou, Jianhui(jhzhou@hmfl.ac.cn) ; Zhu, Xuetao(xtzhu@iphy.ac.cn) ; Guo, Jiandong(jdguo@iphy.ac.cn)
英文摘要In many realistic topological materials, more than one kind of fermions contribute to the electronic bands crossing the Fermi level, leading to various novel phenomena. Here, using momentum-resolved inelastic electron scattering, we investigate the plasmons and their evolution across the phase transition in a type-II Weyl semimetal MoTe2, in which both Weyl fermions and trivial electrons contribute to the Fermi surface in theT(d)phase. One plasmon mode in the 1T ' phase at high temperature and two plasmon modes in the topologicalT(d)phase at low temperature are observed. Combining with first-principles calculations, we show that all the plasmon modes are dominated by the interband correlations between the inverted bands of MoTe2. Especially in theT(d)phase, since the electronic bands split due to inversion symmetry breaking and spin-orbit coupling, the plasmon modes manifest the interband correlation between the topological Weyl fermions and the trivial electrons. Our work emphasizes the significance of the interplay between different kinds of carriers in plasmons of topological materials.
WOS关键词DIRAC PLASMONS ; SURFACE
资助项目National Natural Science Foundation of China[11874404] ; National Natural Science Foundation of China[11634016] ; National Key R&D Program of China[2016YFA0302400] ; National Key R&D Program of China[2017YFA0303600] ; National Key R&D Program of China[2016YFA0300600] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB30000000] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB33000000] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2016008] ; BAQIS Research Program[Y18G09] ; Beijing Natural Science Foundation[Z180008] ; High Magnetic Field Laboratory of Anhui Province
WOS研究方向Physics
语种英语
WOS记录号WOS:000577766100001
出版者IOP PUBLISHING LTD
资助机构National Natural Science Foundation of China ; National Key R&D Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; BAQIS Research Program ; Beijing Natural Science Foundation ; High Magnetic Field Laboratory of Anhui Province
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/104515]  
专题中国科学院合肥物质科学研究院
通讯作者Zhou, Jianhui; Zhu, Xuetao; Guo, Jiandong
作者单位1.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
4.Beijing Inst Technol, Beijing Key Lab Nanophoton & Ultrafine Optoelect, Sch Phys, Key Lab Adv Optoelect Quantum Architecture & Meas, Beijing 100081, Peoples R China
5.Chinese Acad Sci, High Field Magnet Lab, Anhui Prov Key Lab Condensed Matter Phys Extreme, Hefei 230031, Peoples R China
6.Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China
7.Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China
推荐引用方式
GB/T 7714		 Jia, Xun,Wang, Maoyuan,Yan, Dayu,et al. Topologically nontrivial interband plasmons in type-II Weyl semimetal MoTe2[J]. NEW JOURNAL OF PHYSICS,2020,22.
APA Jia, Xun.,Wang, Maoyuan.,Yan, Dayu.,Xue, Siwei.,Zhang, Shuyuan.,...&Guo, Jiandong.(2020).Topologically nontrivial interband plasmons in type-II Weyl semimetal MoTe2.NEW JOURNAL OF PHYSICS,22.
MLA Jia, Xun,et al."Topologically nontrivial interband plasmons in type-II Weyl semimetal MoTe2".NEW JOURNAL OF PHYSICS 22(2020).

入库方式： OAI收割

来源：合肥物质科学研究院

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。