Observation and Manipulation of Visible Edge Plasmons in Bi2Te3 Nanoplates
文献类型：期刊论文
| 作者 | Zhang, Guanhua3; Sun, Julong3; Mao, Libang4; Cao, Tun4; Zhou, Chuanyao3; Jiang, Peng2; Bao, Xinhe2; Yang, Xueming3; Lu, Xiaowei1,2; Hao, Qunqing3 |
| 刊名 | NANO LETTERS
 |
| 出版日期 | 2018-05-01 |
| 卷号 | 18期号:5页码:2879-2884 |
| ISSN号 | 1530-6984 |
| 关键词 | Bi2te3 Edge Plasmon Selective Excitation Interband Transition Peem |
| DOI | 10.1021/acs.nanolett.8b00023 |
| 文献子类 | Article |
| 英文摘要 | Noble metals, like Ag and Au, are the most intensively studied plasmonic materials in the visible range. Plasmons in semiconductors, however, are usually believed to be in the infrared wavelength region due to the intrinsic low carrier concentrations. Herein, we observe the edge plasmon modes of Bi2Te3, a narrow-band gap semiconductor, in the visible spectral range using photoemission electron microscopy (PEEM). The Bi2Te3 nanoplates excited by 400 nm femtosecond laser pulses exhibit strong photoemission intensities along the edges, which follow a cos(4) dependence on the polarization state of incident beam. Because of the phase retardation effect, plasmonic response along different edges can be selectively exited. The thickness-dependent photoemission intensities exclude the spin-orbit induced surface states as the origin of these plasmonic modes. Instead, we propose that the interband transition-induced nonequilibrium carriers might play a key role. Our results not only experimentally demonstrate the possibility of visible plasmons in semiconducting materials but also open up a new avenue for exploring the optical properties of topological insulator materials using PEEM. |
| WOS关键词 | PHOTOEMISSION ELECTRON-MICROSCOPY ; TOPOLOGICAL INSULATOR ; SILVER NANOPARTICLES ; LIGHT ; GOLD ; STATES ; POLARITONS ; RESONANCES ; MODES ; FILMS |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| 出版者 | AMER CHEMICAL SOC |
| WOS记录号 | WOS:000432093200020 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/167136]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Cao, Tun; Zhou, Chuanyao; Jiang, Peng; Bao, Xinhe |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, CAS Ctr Excellence Nanosci, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Liaoning, Peoples R China 4.Dalian Univ Technol, Dept Biomed Engn, Dalian 116024, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Guanhua,Sun, Julong,Mao, Libang,et al. Observation and Manipulation of Visible Edge Plasmons in Bi2Te3 Nanoplates[J]. NANO LETTERS,2018,18(5):2879-2884. |
| APA | Zhang, Guanhua.,Sun, Julong.,Mao, Libang.,Cao, Tun.,Zhou, Chuanyao.,...&Cen, Mengjia.(2018).Observation and Manipulation of Visible Edge Plasmons in Bi2Te3 Nanoplates.NANO LETTERS,18(5),2879-2884. |
| MLA | Zhang, Guanhua,et al."Observation and Manipulation of Visible Edge Plasmons in Bi2Te3 Nanoplates".NANO LETTERS 18.5(2018):2879-2884. |
入库方式： OAI收割
来源：大连化学物理研究所
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