Quasiparticle interference in unconventional 2d systems
文献类型：期刊论文
| 作者 | Chen,Lan1,2; Cheng,Peng1,2; Wu,Kehui1,2,3 |
| 刊名 | Journal of physics: condensed matter
 |
| 出版日期 | 2017-01-31 |
| 卷号 | 29期号:10 |
| 关键词 | Quasiparticle particle interference Scanning tunneling microscopy Silicene 2d materials |
| ISSN号 | 0953-8984 |
| DOI | 10.1088/1361-648x/aa54da |
| 英文摘要 | Abstract at present, research of 2d systems mainly focuses on two kinds of materials: graphene-like materials and transition-metal dichalcogenides (tmds). both of them host unconventional 2d electronic properties: pseudospin and the associated chirality of electrons in graphene-like materials, and spin-valley-coupled electronic structures in the tmds. these exotic electronic properties have attracted tremendous interest for possible applications in nanodevices in the future. investigation on the quasiparticle interference (qpi) in 2d systems is an effective way to uncover these properties. in this review, we will begin with a brief introduction to 2d systems, including their atomic structures and electronic bands. then, we will discuss the formation of friedel oscillation due to qpi in constant energy contours of electron bands, and show the basic concept of fourier-transform scanning tunneling microscopy/spectroscopy (ft-stm/sts), which can resolve friedel oscillation patterns in real space and consequently obtain the qpi patterns in reciprocal space. in the next two parts, we will summarize some pivotal results in the investigation of qpi in graphene and silicene, in which systems the low-energy quasiparticles are described by the massless dirac equation. the ft-stm experiments show there are two different interference channels (intervalley and intravalley scattering) and backscattering suppression, which associate with the dirac cones and the chirality of quasiparticles. the monolayer and bilayer graphene on different substrates (sic and metal surfaces), and the monolayer and multilayer silicene on a ag(1?1?1) surface will be addressed. the fifth part will introduce the ft-stm research on qpi in tmds (monolayer and bilayer of wse2), which allow us to infer the spin texture of both conduction and valence bands, and present spin-valley coupling by tracking allowed and forbidden scattering channels. |
| 语种 | 英语 |
| WOS记录号 | IOP:0953-8984-29-10-AA54DA |
| 出版者 | IOP Publishing |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2373510 |
| 专题 | 物理研究所 |
| 作者单位 | 1.Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China 2.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China 3.Collaborative Innovation Center of Quantum Matter, Beijing 100871, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Chen,Lan,Cheng,Peng,Wu,Kehui. Quasiparticle interference in unconventional 2d systems[J]. Journal of physics: condensed matter,2017,29(10). |
| APA | Chen,Lan,Cheng,Peng,&Wu,Kehui.(2017).Quasiparticle interference in unconventional 2d systems.Journal of physics: condensed matter,29(10). |
| MLA | Chen,Lan,et al."Quasiparticle interference in unconventional 2d systems".Journal of physics: condensed matter 29.10(2017). |
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来源：物理研究所
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