Evidence map›Paper›PMID 38086835›Full record

ArticleNature communications2023

Hyperbolic exciton polaritons in a van der Waals magnet.

Francesco L Ruta, Shuai Zhang, Yinming Shao, Samuel L Moore, Swagata Acharya, Zhiyuan Sun, Siyuan Qiu, Johannes Geurs, Brian S Y Kim, Matthew Fu and 13 more

Erratum issuedAbstract read
In one paragraph

Article in Nature communications, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed.

  1. Review
  2. Directional Flow of Confined Polaritons in CrSBr.Advanced materials (Deerfield Beach, Fla.) · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Emerging Device Applications From Strong Light-Matter Interactions in 2D Materials.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Polaritonic quantum matter.Nanophotonics (Berlin, Germany) · 2025
    Review
  17. Article
  18. Review
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

23 authors.

Francesco L Ruta *Department of Physics, Columbia University, New York, NY, USA. f.ruta@columbia.edu.ORCID http://orcid.org/0000-0002-8746-9420
Shuai Zhang *Department of Physics, Columbia University, New York, NY, USA. sz2822@columbia.edu.ORCID http://orcid.org/0000-0003-2158-2495
Yinming Shao *Department of Physics, Columbia University, New York, NY, USA.ORCID http://orcid.org/0000-0002-2891-0028
Samuel L MooreDepartment of Physics, Columbia University, New York, NY, USA.ORCID http://orcid.org/0000-0002-0306-2624
Swagata AcharyaNational Renewable Energy Laboratory, Golden, CO, USA.
Zhiyuan SunDepartment of Physics, Columbia University, New York, NY, USA.ORCID http://orcid.org/0000-0002-0342-6248
Siyuan QiuDepartment of Physics, Columbia University, New York, NY, USA.
Johannes GeursDepartment of Physics, Columbia University, New York, NY, USA.
Brian S Y KimDepartment of Physics, Columbia University, New York, NY, USA.ORCID http://orcid.org/0000-0002-3024-4220
Matthew FuDepartment of Physics, Columbia University, New York, NY, USA.
Daniel G ChicaDepartment of Chemistry, Columbia University, New York, NY, USA.
Dimitar PashovTheory and Simulation of Condensed Matter, King's College London, London, UK.ORCID http://orcid.org/0000-0002-4292-9745
Xiaodong XuDepartment of Physics, University of Washington, Seattle, WA, USA.
Di XiaoDepartment of Physics, University of Washington, Seattle, WA, USA.ORCID http://orcid.org/0000-0003-0165-6848
Milan DelorDepartment of Chemistry, Columbia University, New York, NY, USA.
X-Y ZhuDepartment of Chemistry, Columbia University, New York, NY, USA.ORCID http://orcid.org/0000-0002-2090-8484
Andrew J MillisDepartment of Physics, Columbia University, New York, NY, USA.ORCID http://orcid.org/0000-0001-9413-6344
Xavier RoyDepartment of Chemistry, Columbia University, New York, NY, USA.ORCID http://orcid.org/0000-0002-8850-0725
James C HoneDepartment of Mechanical Engineering, Columbia University, New York, NY, USA.ORCID http://orcid.org/0000-0002-8084-3301
Cory R DeanDepartment of Physics, Columbia University, New York, NY, USA.ORCID http://orcid.org/0000-0003-2967-5960
Mikhail I KatsnelsonInstitute for Molecules and Materials, Radboud University, Nijmegen, Netherlands.ORCID http://orcid.org/0000-0001-5165-7553
Mark van SchilfgaardeNational Renewable Energy Laboratory, Golden, CO, USA.
D N BasovDepartment of Physics, Columbia University, New York, NY, USA. db3056@columbia.edu.ORCID http://orcid.org/0000-0001-9785-5387

Funding

National Science Foundation (NSF) DMR-2011738U.S. Department of Energy (DOE) DE-AC36-08GO28308U.S. Department of Energy (DOE) DE-SC0019443
6 · The paper itself

Abstract

Exciton polaritons are quasiparticles of photons coupled strongly to bound electron-hole pairs, manifesting as an anti-crossing light dispersion near an exciton resonance. Highly anisotropic semiconductors with opposite-signed permittivities along different crystal axes are predicted to host exotic modes inside the anti-crossing called hyperbolic exciton polaritons (HEPs), which confine light subdiffractionally with enhanced density of states. Here, we show observational evidence of steady-state HEPs in the van der Waals magnet chromium sulfide bromide (CrSBr) using a cryogenic near-infrared near-field microscope. At low temperatures, in the magnetically-ordered state, anisotropic exciton resonances sharpen, driving the permittivity negative along one crystal axis and enabling HEP propagation. We characterize HEP momentum and losses in CrSBr, also demonstrating coupling to excitonic sidebands and enhancement by magnetic order: which boosts exciton spectral weight via wavefunction delocalization. Our findings open new pathways to nanoscale manipulation of excitons and light, including routes to magnetic, nonlocal, and quantum polaritonics.

Identifiers

PMID38086835
PMCPMC10716151

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.