当前位置：
X-MOL 学术
›
Nano Lett.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Plasmon-Enhanced Near-Field Chirality in Twisted van der Waals Heterostructures
Nano Letters ( IF 9.6 ) Pub Date : 2020-11-25 , DOI: 10.1021/acs.nanolett.0c03519 Tobias Stauber 1 , Tony Low 2 , Guillermo Gómez-Santos 3
Nano Letters ( IF 9.6 ) Pub Date : 2020-11-25 , DOI: 10.1021/acs.nanolett.0c03519 Tobias Stauber 1 , Tony Low 2 , Guillermo Gómez-Santos 3
Affiliation
|
It is shown that chiral plasmons, characterized by a longitudinal magnetic moment accompanying the longitudinal charge plasmon, lead to electromagnetic near-fields that are also chiral. For twisted bilayer graphene, we estimate that the near-field chirality of screened plasmons can be several orders of magnitude larger than that of the related circularly polarized light. The chirality also manifests itself in a deflection angle that is formed between the direction of the plasmon propagation and its Poynting vector. Twisted van der Waals heterostructures might thus provide a novel platform to promote enantiomer-selective physio-chemical processes in chiral molecules without the application of a magnetic field or external nanopatterning that break time-reversal, mirror plane, or inversion symmetry, respectively.
中文翻译：
扭曲范德华异质结构中的等离激子增强近场手性
结果表明，以伴随纵向电荷等离激元的纵向磁矩为特征的手性等离激元导致电磁近场也是手性的。对于扭曲的双层石墨烯，我们估计筛选出的等离子体激元的近场手性可以比相关的圆偏振光大几个数量级。手性还表现为在等离激元传播的方向与其Poynting向量之间形成的偏转角。因此，扭曲的范德华异质结构可能提供一个新的平台，以促进手性分子中对映体选择性的物理化学过程，而无需施加分别破坏时间反转，镜面或反转对称性的磁场或外部纳米图案。
更新日期：2020-12-10
中文翻译：
扭曲范德华异质结构中的等离激子增强近场手性
结果表明，以伴随纵向电荷等离激元的纵向磁矩为特征的手性等离激元导致电磁近场也是手性的。对于扭曲的双层石墨烯，我们估计筛选出的等离子体激元的近场手性可以比相关的圆偏振光大几个数量级。手性还表现为在等离激元传播的方向与其Poynting向量之间形成的偏转角。因此，扭曲的范德华异质结构可能提供一个新的平台，以促进手性分子中对映体选择性的物理化学过程，而无需施加分别破坏时间反转，镜面或反转对称性的磁场或外部纳米图案。
京公网安备 11010802027423号