Anomalous ultrafast all-optical Hall effect in gapped graphene
Abstract
We propose an ultrafast all-optical anomalous Hall effect in two-dimensional (2D) semiconductors of hexagonal symmetry such as gapped graphene (GG), transition metal dichalcogenides (TMDCs), and hexagonal boron nitride (h-BN). To induce such an effect, the material is subjected to a sequence of two strong-field single-optical-cycle pulses: A chiral pump pulse followed within a few femtoseconds by a probe pulse linearly polarized in the armchair direction of the 2D lattice. Due to the effect of topological resonance, the first (pump) pulse induces a large chirality (valley polarization) in the system, while the second pulse generates a femtosecond pulse of the anomalous Hall current. The proposed effect is fundamentally the fastest all-optical anomalous Hall effect possible in nature. It can be applied to ultrafast all-optical storage and processing of information, both classical and quantum.
- Authors:
-
- Georgia State University, Atlanta, GA (United States)
- Publication Date:
- Research Org.:
- Georgia State Univ., Atlanta, GA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division (CSGB); National Science Foundation 9NSF)
- OSTI Identifier:
- 1980997
- Grant/Contract Number:
- FG02-01ER15213; SC0007043; EFMA-1741691
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nanophotonics (Online)
- Additional Journal Information:
- Journal Name: Nanophotonics (Online); Journal Volume: 10; Journal Issue: 14; Journal ID: ISSN 2192-8614
- Publisher:
- de Gruyter
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; anomalous Hall effect; femtosecond pulse; graphene; laser pulse; pulse matter interaction; ultrafast process
Citation Formats
Motlagh, S. Azar Oliaei, and Apalkov, Vadym. Anomalous ultrafast all-optical Hall effect in gapped graphene. United States: N. p., 2021.
Web. doi:10.1515/nanoph-2021-0227.
Motlagh, S. Azar Oliaei, & Apalkov, Vadym. Anomalous ultrafast all-optical Hall effect in gapped graphene. United States. https://doi.org/10.1515/nanoph-2021-0227
Motlagh, S. Azar Oliaei, and Apalkov, Vadym. Wed .
"Anomalous ultrafast all-optical Hall effect in gapped graphene". United States. https://doi.org/10.1515/nanoph-2021-0227. https://www.osti.gov/servlets/purl/1980997.
@article{osti_1980997,
title = {Anomalous ultrafast all-optical Hall effect in gapped graphene},
author = {Motlagh, S. Azar Oliaei and Apalkov, Vadym},
abstractNote = {We propose an ultrafast all-optical anomalous Hall effect in two-dimensional (2D) semiconductors of hexagonal symmetry such as gapped graphene (GG), transition metal dichalcogenides (TMDCs), and hexagonal boron nitride (h-BN). To induce such an effect, the material is subjected to a sequence of two strong-field single-optical-cycle pulses: A chiral pump pulse followed within a few femtoseconds by a probe pulse linearly polarized in the armchair direction of the 2D lattice. Due to the effect of topological resonance, the first (pump) pulse induces a large chirality (valley polarization) in the system, while the second pulse generates a femtosecond pulse of the anomalous Hall current. The proposed effect is fundamentally the fastest all-optical anomalous Hall effect possible in nature. It can be applied to ultrafast all-optical storage and processing of information, both classical and quantum.},
doi = {10.1515/nanoph-2021-0227},
journal = {Nanophotonics (Online)},
number = 14,
volume = 10,
place = {United States},
year = {Wed Aug 18 00:00:00 EDT 2021},
month = {Wed Aug 18 00:00:00 EDT 2021}
}
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