Related Experiment Video
Updated: Nov 2, 2025
11:24
Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices
Published on: July 11, 2025
9.5K
Bilayer graphene in strong ultrafast laser fields
Pardeep Kumar1,2, Thakshila M Herath1, Vadym Apalkov1
1Center for Nano-Optics (CeNO) and Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303, United States of America.
Summary
We theoretically investigated ultrastrong optical pulses interacting with bilayer graphene (BLG). Oblique incidence angles enable manipulation of induced electric current and charge transfer, offering new control possibilities.
Area of Science:
- Condensed Matter Physics
- Quantum Optics
- Materials Science
Background:
- Bilayer graphene (BLG) exhibits unique electronic properties.
- Interaction with intense optical fields can induce novel phenomena.
Purpose of the Study:
- To theoretically investigate the interaction of ultrastrong optical pulses with AB-stacked BLG.
- To explore the generation and manipulation of electric currents and charge transfer.
Main Methods:
- Theoretical modeling of ultrastrong femtosecond laser pulse interaction.
- Analysis of electron excitation and redistribution within BLG.
Main Results:
- Finite conduction band population is achieved upon excitation.
- Oblique incidence breaks interlayer symmetry, enabling transverse current generation.
- Current magnitude, direction, and charge transfer are tunable via incidence angle.
Conclusions:
- The angle of incidence is a critical parameter for controlling light-matter interactions in BLG.
- Symmetry breaking is key to generating transverse currents.
- This work offers pathways for manipulating electronic properties in 2D materials.
