Crossover between Weak Antilocalization and Weak Localization of Bulk States in Ultrathin Bi2Se3 Films
文献类型：期刊论文
| 作者 | Wang, HC ; Liu, HW ; Chang, CZ ; Zuo, HK ; Zhao, YF ; Sun, Y ; Xia, ZC ; He, K ; Ma, XC ; Xie, XC ; Xue, QK ; Wang, J |
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2014 |
| 卷号 | 4 |
| ISSN号 | 2045-2322 |
| 通讯作者 | Wang, J (reprint author), Peking Univ, Sch Phys, Int Ctr Quantum Mat, Beijing 100871, Peoples R China. |
| 中文摘要 | We report transport studies on the 5 nm thick Bi2Se3 topological insulator films which are grown viamolecular beam epitaxy technique. The angle-resolved photoemission spectroscopy data show that the Fermi level of the system lies in the bulk conduction band above the Dirac point, suggesting important contribution of bulk states to the transport results. In particular, the crossover from weak antilocalization to weak localization in the bulk states is observed in the parallel magnetic field measurements up to 50 Tesla. The measured magneto-resistance exhibits interesting anisotropy with respect to the orientation of parallel magnetic field B-// and the current I, signifying intrinsic spin-orbit coupling in the Bi2Se3 films. Our work directly shows the crossover of quantum interference effect in the bulk states from weak antilocalization to weak localization. It presents an important step toward a better understanding of the existing three-dimensional topological insulators and the potential applications of nano-scale topological insulator devices. |
| 资助信息 | National Basic Research Program of China [2013CB934600, 2012CB921300]; National Natural Science Foundation of China [11222434, 11174007]; Research Fund for the Doctoral Program of Higher Education (RFDP) of China |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59706]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Wang, HC,Liu, HW,Chang, CZ,et al. Crossover between Weak Antilocalization and Weak Localization of Bulk States in Ultrathin Bi2Se3 Films[J]. SCIENTIFIC REPORTS,2014,4. |
| APA | Wang, HC.,Liu, HW.,Chang, CZ.,Zuo, HK.,Zhao, YF.,...&Wang, J.(2014).Crossover between Weak Antilocalization and Weak Localization of Bulk States in Ultrathin Bi2Se3 Films.SCIENTIFIC REPORTS,4. |
| MLA | Wang, HC,et al."Crossover between Weak Antilocalization and Weak Localization of Bulk States in Ultrathin Bi2Se3 Films".SCIENTIFIC REPORTS 4(2014). |
入库方式： OAI收割
来源：物理研究所
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