Defects controlled hole doping and multivalley transport in SnSe single crystals
文献类型：期刊论文
| 作者 | Wang, Z; Fan, CC; Shen, ZX; Hua, CQ; Hu, QF; Sheng, F; Lu, YH; Fang, HY; Qiu, ZZ; Lu, J |
| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2018 |
| 卷号 | 9页码:- |
| 关键词 | Black Phosphorus Thermoelectric Performance |
| ISSN号 | 2041-1723 |
| DOI | 10.1038/s41467-017-02566-1 |
| 文献子类 | 期刊论文 |
| 英文摘要 | SnSe is a promising thermoelectric material with record-breaking figure of merit. However, to date a comprehensive understanding of the electronic structure and most critically, the self-hole-doping mechanism in SnSe is still absent. Here we report the highly anisotropic electronic structure of SnSe investigated by angle-resolved photoemission spectroscopy, in which a unique pudding-mould-shaped valence band with quasi-linear energy dispersion is revealed. We prove that p-type doping in SnSe is extrinsically controlled by local phase segregation of SnSe2 microdomains via interfacial charge transferring. The multivalley nature of the pudding-mould band is manifested in quantum transport by crystallographic axis-dependent weak localisation and exotic non-saturating negative magnetoresistance. Strikingly, quantum oscillations also reveal 3D Fermi surface with unusual interlayer coupling strength in p-SnSe, in which individual monolayers are interwoven by peculiar point dislocation defects. Our results suggest that defect engineering may provide versatile routes in improving the thermoelectric performance of the SnSe family. |
| 语种 | 英语 |
| WOS记录号 | WOS:000419308000008 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/28960]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Wang, Z 2.Fan, CC 3.Shen, ZX 4.Hua, CQ 5.Hu, QF 6.Sheng, F 7.Lu, YH 8.Fang, HY 9.Qiu, ZZ 10.Lu, J |
| 推荐引用方式 GB/T 7714 | Wang, Z,Fan, CC,Shen, ZX,et al. Defects controlled hole doping and multivalley transport in SnSe single crystals[J]. NATURE COMMUNICATIONS,2018,9:-. |
| APA | Wang, Z.,Fan, CC.,Shen, ZX.,Hua, CQ.,Hu, QF.,...&Zheng, Y.(2018).Defects controlled hole doping and multivalley transport in SnSe single crystals.NATURE COMMUNICATIONS,9,-. |
| MLA | Wang, Z,et al."Defects controlled hole doping and multivalley transport in SnSe single crystals".NATURE COMMUNICATIONS 9(2018):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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