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DOI | 10.1038/s41467-018-03997-0 |
Giant magnetic splitting inducing near-unity valley polarization in van der Waals heterostructures | |
Nagler, Philipp1; Ballottin, Mariana V.2; Mitioglu, Anatolie A.2; Mooshammer, Fabian1; Paradiso, Nicola1; Strunk, Christoph1; Huber, Rupert1; Chernikov, Alexey1; Christianen, Peter C. M.2; Schuller, Christian1; Korn, Tobias1 | |
2017-11-16 | |
发表期刊 | NATURE COMMUNICATIONS
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ISSN | 2041-1723 |
出版年 | 2017 |
卷号 | 8 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Netherlands |
英文摘要 | Monolayers of semiconducting transition metal dichalcogenides exhibit intriguing fundamental physics of strongly coupled spin and valley degrees of freedom for charge carriers. While the possibility of exploiting these properties for information processing stimulated concerted research activities towards the concept of valleytronics, maintaining control over spin-valley polarization proved challenging in individual monolayers. A promising alternative route explores type II band alignment in artificial van der Waals heterostructures. The resulting formation of interlayer excitons combines the advantages of long carrier lifetimes and spin-valley locking. Here, we demonstrate artificial design of a two-dimensional heterostructure enabling intervalley transitions that are not accessible in monolayer systems. The resulting giant effective g factor of -15 for interlayer excitons induces near-unity valley polarization via valley-selective energetic splitting in high magnetic fields, even after nonselective excitation. Our results highlight the potential to deterministically engineer novel valley properties in van der Waals heterostructures using crystallographic alignment. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000415323000024 |
WOS关键词 | INTERLAYER EXCITONS ; MONOLAYER ; WSE2 ; GENERATION ; EMITTERS ; LAYER ; MOS2 |
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/203778 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Regensburg, Inst Expt & Angew Phys, D-93040 Regensburg, Germany; 2.Radboud Univ Nijmegen, High Field Magnet Lab HFML EMFL, NL-6525 ED Nijmegen, Netherlands |
推荐引用方式 GB/T 7714 | Nagler, Philipp,Ballottin, Mariana V.,Mitioglu, Anatolie A.,et al. Giant magnetic splitting inducing near-unity valley polarization in van der Waals heterostructures[J]. NATURE COMMUNICATIONS,2017,8. |
APA | Nagler, Philipp.,Ballottin, Mariana V..,Mitioglu, Anatolie A..,Mooshammer, Fabian.,Paradiso, Nicola.,...&Korn, Tobias.(2017).Giant magnetic splitting inducing near-unity valley polarization in van der Waals heterostructures.NATURE COMMUNICATIONS,8. |
MLA | Nagler, Philipp,et al."Giant magnetic splitting inducing near-unity valley polarization in van der Waals heterostructures".NATURE COMMUNICATIONS 8(2017). |
条目包含的文件 | 条目无相关文件。 |
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