Related Experiment Video
Updated: Aug 12, 2025
08:01
Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
7.2K
The Interaction of 2D Materials With Circularly Polarized Light
Rong Rong1, Ying Liu1, Xuchen Nie1
1Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education, State Key Laboratory of Mechanics and Control of Mechanical Structures, and Institute for Frontier Science, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|January 26, 2023
Summary
Two-dimensional materials (2DMs) interact with circularly polarized light, enabling novel optoelectronic and spin/valleytronic devices. This review covers recent advances, challenges, and opportunities in this exciting field.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Optoelectronics
Background:
- Two-dimensional materials (2DMs) possess unique spin-valley locking properties.
- These properties lead to strong exciton binding and chiral optical selection rules.
- This makes 2DMs highly promising for advanced electronic and spintronic applications.
Purpose of the Study:
- To review recent advancements in the interaction between circularly polarized light and various 2D materials.
- To discuss phenomena such as the valley/exciton Hall effect and Moiré excitons.
- To explore future theoretical and experimental opportunities in chiral light-2DMs interactions.
Main Methods:
- Literature review of studies on 2DMs and circularly polarized light.
- Analysis of phenomena including circular dichroism and circularly polarized photoluminescence.
- Discussion of material classes: graphene, black phosphorus, transition metal dichalcogenides, heterostructures, perovskites, and topological materials.
Main Results:
- Significant progress has been made in understanding and utilizing the interaction of chiral light with 2DMs.
- Observed phenomena include valley/exciton Hall effect, Moiré excitons, and optical Stark effects.
- The review highlights the potential for novel optoelectronic and spin/valleytronic devices.
Conclusions:
- The interaction of chiral light with 2DMs offers a rich platform for developing next-generation devices.
- Addressing current challenges will accelerate the realization of these applications.
- Further research into theoretical and experimental aspects is crucial for advancing the field.
Related Concept Videos
01:29Potential Due to a Polarized Object
453
A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
453
01:01Group Polarization
34.5K
Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition.
34.5K
02:24Properties of Enantiomers and Optical Activity
17.3K
It is essential to understand the difference between chiral and achiral interactions and the implications thereof in optical activity and their applications. Just as our feet, which are chiral, interact uniquely with chiral objects, such as a pair of shoes, but identically with achiral socks, enantiomers of a molecule exhibit different properties only when they interact with other chiral media. An example of a significant implication from this facet is the phenomenon known as optical activity,...
17.3K
01:31Dielectric Polarization in a Capacitor
4.8K
The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
4.8K
01:12Interaction of EM Radiation with Matter: Spectroscopy
1.9K
Electromagnetic (EM) radiation can be considered an oscillating electric and magnetic field propagating through a medium that can interact with matter in its path. The electric field in the radiation can interact with electrical charges in the atoms or molecules in the matter. On the other hand, the magnetic field can interact with the magnetic field in the atomic nucleus. The study of the interaction between electromagnetic radiation and matter is termed spectroscopy. Spectroscopy is the study...
1.9K
01:27π Electron Effects on Chemical Shift: Overview
1.1K
An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0,...
1.1K