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DOI | 10.1038/s41467-018-04583-0 |
Unconventional double-bended saturation of carrier occupation in optically excited graphene due to many-particle interactions | |
Winzer, Torben1; Mittendorff, Martin2; Winnerl, Stephan3; Mittenzwey, Henry1; Jago, Roland4; Helm, Manfred3,5; Malic, Ermin4; Knorr, Andreas1 | |
2017-05-09 | |
发表期刊 | NATURE COMMUNICATIONS |
ISSN | 2041-1723 |
出版年 | 2017 |
卷号 | 8 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; USA; Sweden |
英文摘要 | Saturation of carrier occupation in optically excited materials is a well-established phenomenon. However, so far, the observed saturation effects have always occurred in the strong-excitation regime and have been explained by Pauli blocking of the optically filled quantum states. On the basis of microscopic theory combined with ultrafast pump-probe experiments, we reveal a new low-intensity saturation regime in graphene that is purely based on many-particle scattering and not Pauli blocking. This results in an unconventional double-bended saturation behaviour: both bendings separately follow the standard saturation model exhibiting two saturation fluences; however, the corresponding fluences differ by three orders of magnitude and have different physical origin. Our results demonstrate that this new and unexpected behaviour can be ascribed to an interplay between time-dependent many-particle scattering and phase-space filling effects. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000400846900001 |
WOS关键词 | LASER |
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/203844 |
专题 | 资源环境科学 |
作者单位 | 1.Tech Univ Berlin, Inst Theoret Phys Nichtlineare Opt & Quantenelekt, Hardenbergstr 36, D-10623 Berlin, Germany; 2.Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA; 3.Helmholtz Zentrum Dresden Rossendorf, POB 510119, D-01314 Dresden, Germany; 4.Chalmers Univ Technol, Dept Phys, SE-41296 Gothenburg, Sweden; 5.Tech Univ Dresden, Inst Angew Phys, D-01062 Dresden, Germany |
推荐引用方式 GB/T 7714 | Winzer, Torben,Mittendorff, Martin,Winnerl, Stephan,et al. Unconventional double-bended saturation of carrier occupation in optically excited graphene due to many-particle interactions[J]. NATURE COMMUNICATIONS,2017,8. |
APA | Winzer, Torben.,Mittendorff, Martin.,Winnerl, Stephan.,Mittenzwey, Henry.,Jago, Roland.,...&Knorr, Andreas.(2017).Unconventional double-bended saturation of carrier occupation in optically excited graphene due to many-particle interactions.NATURE COMMUNICATIONS,8. |
MLA | Winzer, Torben,et al."Unconventional double-bended saturation of carrier occupation in optically excited graphene due to many-particle interactions".NATURE COMMUNICATIONS 8(2017). |
条目包含的文件 | 条目无相关文件。 |
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