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Valley manipulation by external fields in two-dimensional materials and their hybrid systems
Ya-Ping Shao1, Yun-Qin Li1, Jun-Ding Zheng1
1Key Laboratory of Polar Materials and Devices, Ministry of Education, East China Normal University, Shanghai 200241, People's Republic of China.
Summary
External fields are key to controlling valley properties in 2D valleytronic materials, overcoming challenges like energy degeneracy. This research reviews recent advancements in manipulating these materials for future technologies.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Quantum Mechanics
Background:
- Two-dimensional (2D) valleytronic materials offer novel electronic properties.
- Challenges include valley energy degeneracy and difficulty in manipulating valley properties.
- External fields are crucial for overcoming these limitations.
Purpose of the Study:
- To review recent progress in modulating 2D valleytronic material properties using external fields.
- To explore diverse material configurations, including monolayers, bilayers, and heterostructures.
- To inspire future research and development in the field of valleytronics.
Main Methods:
- Review of existing literature on external field applications in 2D valleytronics.
- Analysis of various 2D material systems (monolayers, bilayers, heterostructures).
- Examination of different external field configurations and their effects.
Main Results:
- External fields effectively generate and manipulate valley properties in 2D systems.
- Diverse strategies exist for applying fields across various material architectures.
- Significant advancements have been made in overcoming valley degeneracy issues.
Conclusions:
- Modulating valley properties of 2D materials with external fields is a rapidly advancing area.
- This approach holds significant promise for the future of valleytronics and novel device applications.
- Continued research is essential for unlocking the full potential of 2D valleytronic materials.
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