Light-induced anomalous Hall effect in graphene
Open accessAbstract
Many non-equilibrium phenomena have been discovered or predicted in optically-driven quantum solids 1. Examples include light-induced superconductivity 2,3 and Floquet-engineered topological phases 4-8. These are short lived effects that should lead to measurable changes in electrical transport, which can be characterized using an ultrafast device architecture based on photoconductive switches 9. Here, we report the observation of a light-induced anomalous Hall effect in monolayer graphene driven by a femtosecond pulse of circularly polarized light. The dependence of the effect on a gate potential used to tune the Fermi level reveals multiple features that reflect a Floquet-engineered topological band structure 4,5, similar to the band structure originally proposed by Haldane 10. This includes an approximately 60 meV wide conductance plateau centered at the Dirac point, where a gap of equal magnitude is predicted to open. We find that when the Fermi level lies within this plateau, the estimated anomalous Hall conductance saturates around 1.8±0.4 e 2/h.
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A light-induced anomalous Hall current was observed in graphene exposed to circularly polarized light.
“Recently, a light-induced anomalous Hall current was observed in graphene exposed to circularly polarized light248.”
From Ultrafast terahertz emission from emerging symmetry-broken materials (2023) · cites this paper as [248]
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Ultrafast terahertz emission from emerging symmetry-broken materials
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- Authors
- McIver, J. W., Schulte, B., Stein, F.-U., Matsuyama, T., Jotzu, G., Meier, G., & Cavalleri, A.
- Affiliations
- Max Planck Institute for the Structure and Dynamics of Matter (DE)
- University of Oxford (GB)
- Corresponding author
- McIver, J. W.
- Cavalleri, A.
- Venue
- Nature Physics
- Published
- 2019-11-04
- Volume
- 16
- Issue
- 1
- Pages
- 38-41
- ISSN
- 1745-2473 (ISSN-L)
- 1745-2481
- PMC
- PMC6949120
- OpenAlex
- W2988339616
- Cited by
- 888
- References
- 33
- Citations by year
- 2026: 101 · 2025: 150 · 2024: 109 · 2023: 128 · 2022: 148 · 2021: 126 · 2020: 118 · 2019: 6 · 2012: 1
- FWCI
- 43.80
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Nature Physics (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- arXiv (Cornell University) (submittedVersion)
- arXiv (Cornell University)
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Topological Materials and Phenomena
- Physical Sciences › Materials Science › Materials Chemistry › Graphene research and applications
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum and electron transport phenomena
- Keywords
- anomalous Hall effect, monolayer graphene, Floquet engineering, circularly polarized light, femtosecond pulses, Haldane model, Dirac point, conductance plateaus, Fermi level tuning
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