Effect of aging-induced disorder on the quantum transport properties of few-layer WTe2
文献类型：期刊论文
| 作者 | Liu, Wei Lai ; Chen, Mao Lin ; Li, Xiao Xi ; Dubey, Sudipta ; Xiong, Ting ; Dai, Zhi Ming ; Yin, Jun ; Guo, Wan Lin ; Ma, Jin Long ; Chen, Ya Ni ; Tan, Jun ; Li, Da ; Wang, Zhen Hua ; Li, Wu ; Bouchiat, Vincent ; Sun, Dong Ming ; Han, Zheng ; Zhang, Zhi Dong |
| 刊名 | 2D MATERIALS
 |
| 出版日期 | 2017-03-01 |
| 卷号 | 4期号:1页码:- |
| 关键词 | WTe2 quantum transport disorder |
| ISSN号 | 2053-1583 |
| 通讯作者 | Sun, DM ; Han, Z (reprint author), Chinese Acad Sci, IMR, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China. ; Sun, DM ; Han, Z (reprint author), Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China. |
| 中文摘要 | The emerging physical phenomena found in transition metal dicalcogenides (TMDCs) have triggered vast investigations in recent years. Among them, nanoelectronics in WTe2 devices have attracted particular attentions due to its exotic band structure that leads to exciting phenomena such as the predicted type-II Weyl semimetallic state. However, the thickness dependence of its quantum transport properties in the two-dimensional limit remains under debate. The major missing ingredient in the previous studies is the aging-induced disorder, as atomically thin layers of TMDCs are often known to be metastable in the ambient atmosphere. Here, we show systematic performance of low temperature quantum electronic transport of few-layer WTe2. It is observed that aging-induced localized electronic states explains the low temperature Coulomb gap in transport measurements, leading to the anomalous magnetotransport which appears to be extrinsic. While few-layered WTe2 shows clear metallic tendency in the fresh state, degraded devices first exhibited a re-entrant insulating behavior, and finally entered a fully insulating state. Correspondingly, a crossover from parabolic to linear magnetoresistance, and, upon further aging, leads to the observation of weak anti-localization. Our study reveals for the first time the correlation between the unusual magnetotransport and disorder in few-layered WTe2, which is indispensable in providing guidance on its future device applications. |
| 学科主题 | Materials Science, Multidisciplinary |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [51522104, 11504385, 51272256, 61422406, 61574143, 51371175, 51331006]; Chinese Academy of Science [KJZD-EW-M05-3]; EU [604391]; 2DTRANSFORMERS project under OH RISQUE program of Agence Nationale de la Recherche (ANR) [ANR-14-OHRI-0004] |
| 语种 | 英语 |
| 公开日期 | 2017-08-17 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/78275]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Liu, Wei Lai,Chen, Mao Lin,Li, Xiao Xi,et al. Effect of aging-induced disorder on the quantum transport properties of few-layer WTe2[J]. 2D MATERIALS,2017,4(1):-. |
| APA | Liu, Wei Lai.,Chen, Mao Lin.,Li, Xiao Xi.,Dubey, Sudipta.,Xiong, Ting.,...&Zhang, Zhi Dong.(2017).Effect of aging-induced disorder on the quantum transport properties of few-layer WTe2.2D MATERIALS,4(1),-. |
| MLA | Liu, Wei Lai,et al."Effect of aging-induced disorder on the quantum transport properties of few-layer WTe2".2D MATERIALS 4.1(2017):-. |
入库方式： OAI收割
来源：金属研究所
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