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Updated: Sep 7, 2025
07:44
Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
Published on: April 28, 2016
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Topological resonance in graphene-like materials.
Krishna Rana Magar1, S Azar Oliaei Motlagh1, Vadym Apalkov1
1Department of Physics and Astronomy, Georgia State University, Atlanta, GA 30303, United States of America.
Summary
Topological resonance in gapped multilayer graphene can be observed with optical pulses. This phenomenon, driven by accumulating topological phase, is visible as inter-band electron transfer, and differs between monolayer and multilayer graphene.
Area of Science:
- Condensed matter physics
- Materials science
- Quantum optics
Background:
- Topological materials exhibit unique electronic properties.
- Interaction with optical pulses can induce dynamic phases in electron systems.
- Topological phase accumulation can lead to observable phenomena like topological resonance.
Purpose of the Study:
- To theoretically investigate topological resonance in gapped multilayer graphene.
- To understand the conditions for observing topological resonance.
- To differentiate the behavior of monolayer versus multilayer graphene under optical pulse excitation.
Main Methods:
- Theoretical modeling of electron dynamics in topological materials.
- Analysis of phase accumulation under short and strong optical pulses.
- Simulation of inter-band electron population transfer.
Main Results:
- Topological resonance requires a finite bandgap in the material.
- For graphene monolayer, resonance occurs with elliptically polarized pulses.
- For multilayer graphene, resonance can be achieved with linearly polarized pulses.
Conclusions:
- Topological resonance is a viable phenomenon in gapped multilayer graphene.
- The polarization of the optical pulse is crucial for observing topological resonance.
- Multilayer graphene offers more flexibility in achieving topological resonance compared to monolayer graphene.
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