Current-induced second harmonic generation in inversion-symmetric Dirac and Weyl semimetals
Open accessAbstract
Topological materials have gained attention as a platform to explore novel nonlinear optical responses. To date, this research has largely focused on acentric materials, leaving the inversion-symmetric systems largely unexplored. In this work, the authors demonstrate that inversion-symmetric topological semimetals show perturbatively divergent second-harmonic generation when a finite current is applied. Because the response is both large and highly controllable, it can be used to investigate the nonequilibrium physics of topological materials and design future optical devices.
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
A resultant current-induced second harmonic response can be generated away from high symmetry axes of the crystal, as it is not constrained by crystallographic symmetry in the same way as static harmonic generation.
“a resultant current-induced second harmonic response can be generated away from high symmetry axes of the crystal, as it is not constrained by crystallographic symmetry in the same way as static harmonic generation11.”
From Ultrafast terahertz emission from emerging symmetry-broken materials (2023) · cites this paper as [11]
The Introduction (p. 1) explains that a current breaks inversion symmetry and enables second-harmonic generation; the conclusion (p. 5) says the response can be controlled by changing the current’s direction. The paper does not specifically establish generation away from high-symmetry crystal axes or make the claimed comparison with crystallographic constraints on static harmonic generation. (LLM, conf=0.81)
Experimental — accuracy not yet measuredPT-conserved second-order nonlinear responses can emerge in the presence of net linear momentum, such as in the photon drag effect or transient photocurrents.
“It is interesting to note that -conserved (but and broken) second-order nonlinear responses can also emerge in the presence of net linear momentum, such as in the photon drag effect (with net photon momentum) or transient photocurrents (net charge momentum)11,60.”
From Ultrafast terahertz emission from emerging symmetry-broken materials (2023) · cites this paper as [11]
The introduction (p. 1) says a DC field makes the electron distribution asymmetric in momentum space, induces a current, and enables second-harmonic generation in inversion-symmetric semimetals. This supports the current-carrying example, but the paper does not establish the claim specifically for PT-conserved responses or discuss photon drag and transient photocurrents as examples. (LLM, conf=0.85)
Experimental — accuracy not yet measured
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
The citation lists haven’t been fetched yet
References 53 · Cited by 47
Research works printed but not linked: 2
- Taylor, D. A. Yarotski, and R. P. Prasankumar, (2020), arXiv:2005.10308. · arXiv
- [56]K. Fujiwara, J. Ikeda, J. Shiogai, T. Seki, K. Takanashi, and A. Tsukazaki, Japanese Journal of Applied Physics 58 , 050912 (2019).
- Authors
- Takasan, K., Morimoto, T., Orenstein, J., & Moore, J. E.
- Affiliations
- Lawrence Berkeley National Laboratory (US)
- Japan Science and Technology Agency (JP)
- Venue
- Physical Review B
- Publisher
- American Physical Society (APS)
- Published
- 2021-10-05
- Volume
- 104
- Issue
- 16
- ISSN
- 2469-9950 (ISSN-L)
- 2469-9969
- OpenAlex
- W3043609574
- Cited by
- 47
- References
- 53
- Citations by year
- 2026: 2 · 2025: 4 · 2024: 13 · 2023: 10 · 2022: 11 · 2021: 6 · 2020: 1
- FWCI
- 4.32
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Licence
- Locations
- Physical review. B./Physical review. B (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- arXiv (Cornell University)
- Bulletin of the American Physical Society
- Funders
- U.S. Department of Energy (DE-AC02-05-CH11231)
- Office of Science
- Japan Society for the Promotion of Science
- Basic Energy Sciences
- Japan Science and Technology Corporation (JPMJPR19L9)
- Core Research for Evolutional Science and Technology (JPMJCR19T3)
- Division of Materials Sciences and Engineering (AC02-05CH11231)
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Topological Materials and Phenomena
- Physical Sciences › Materials Science › Materials Chemistry › 2D Materials and Applications
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Magnetic properties of thin films
- Keywords
- second harmonic generation, Dirac semimetal, Weyl semimetals, inversion symmetry, topological semimetals, nonequilibrium physics, optical instruments
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
