Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41467-019-09945-w |
Observation of ultrahigh mobility surface states in a topological crystalline insulator by infrared spectroscopy | |
Wang, Ying1; Luo, Guoyu2; Liu, Junwei3,4; Sankar, R.6; Wang, Nan-Lin7; Chou, Fangcheng5; Fu, Liang3; Li, Zhiqiang2 | |
2019-05-15 | |
发表期刊 | NATURE COMMUNICATIONS
![]() |
ISSN | 2041-1723 |
出版年 | 2017 |
卷号 | 8 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China; Taiwan |
英文摘要 | Topological crystalline insulators possess metallic surface states protected by crystalline symmetry, which are a versatile platform for exploring topological phenomena and potential applications. However, progress in this field has been hindered by the challenge to probe optical and transport properties of the surface states owing to the presence of bulk carriers. Here, we report infrared reflectance measurements of a topological crystalline insulator, (001)-oriented Pb1-xSnxSe in zero and high magnetic fields. We demonstrate that the far-infrared conductivity is unexpectedly dominated by the surface states as a result of their unique band structure and the consequent small infrared penetration depth. Moreover, our experiments yield a surface mobility of 40,000 cm(2) V-1 s(-1), which is one of the highest reported values in topological materials, suggesting the viability of surface-dominated conduction in thin topological crystalline insulator crystals. These findings pave the way for exploring many exotic transport and optical phenomena and applications predicted for topological crystalline insulators. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000408440700003 |
WOS关键词 | LIMIT ; BAND |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204368 |
专题 | 资源环境科学 |
作者单位 | 1.Natl High Magnet Field Lab, Tallahassee, FL 32310 USA; 2.Sichuan Univ, Coll Phys Sci & Technol, Chengdu 610064, Sichuan, Peoples R China; 3.MIT, Dept Phys, Cambridge, MA 02139 USA; 4.Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China; 5.Natl Taiwan Univ, Ctr Condensed Matter Sci, Taipei 10617, Taiwan; 6.Acad Sinica, Inst Phys, Taipei 11529, Taiwan; 7.Peking Univ, Sch Phys, Int Ctr Quantum Mat, Beijing 100871, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Ying,Luo, Guoyu,Liu, Junwei,et al. Observation of ultrahigh mobility surface states in a topological crystalline insulator by infrared spectroscopy[J]. NATURE COMMUNICATIONS,2019,8. |
APA | Wang, Ying.,Luo, Guoyu.,Liu, Junwei.,Sankar, R..,Wang, Nan-Lin.,...&Li, Zhiqiang.(2019).Observation of ultrahigh mobility surface states in a topological crystalline insulator by infrared spectroscopy.NATURE COMMUNICATIONS,8. |
MLA | Wang, Ying,et al."Observation of ultrahigh mobility surface states in a topological crystalline insulator by infrared spectroscopy".NATURE COMMUNICATIONS 8(2019). |
条目包含的文件 | 条目无相关文件。 |
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。
修改评论