Coherent emission from surface Josephson plasmons in striped cuprates
Open accessAbstract
The interplay between charge order and superconductivity remains one of the central themes of research in quantum materials. In the case of cuprates, the coupling between striped charge fluctuations and local electromagnetic fields is especially important, as it affects transport properties, coherence, and dimensionality of superconducting correlations. Here, we study the emission of coherent terahertz radiation in single-layer cuprates of the La 2-x Ba x CuO 4 family, for which this effect is expected to be forbidden by symmetry. We find that emission vanishes for compounds in which the stripes are quasi-static but is activated when c -axis inversion symmetry is broken by incommensurate or fluctuating charge stripes, such as in La 1.905 Ba 0.095 CuO 4 and in La 1.845 Ba 0.155 CuO 4 . In this case, terahertz radiation is emitted by surface Josephson plasmons, which are generally dark modes, but couple to free space electromagnetic radiation because of the stripe modulation.
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?
In that work, emission is argued to arise from surface Josephson plasmons, which cannot generally couple to light fields but can do so here as a result of Umklapp-like scattering off the stripe order.
“emission is argued to arise from surface Josephson plasmons, which cannot generally couple to light fields but can do so here as a result of Umklapp-like scattering off the stripe order71.”
From Ultrafast terahertz emission from emerging symmetry-broken materials (2023) · cites this paper as [71]
In the stripe-ordered cuprate La2-xBaxCuO4, narrow-band THz radiation following optical excitation occurs when fluctuating or incommensurate charge stripes coexist with superconductivity, leading to breaking of inversion symmetry between CuO2 planes.
“the emission of narrow-band THz radiation following optical excitation occurs when fluctuating or incommensurate charge stripes coexist with superconductivity (Fig. 2c–e), leading to a breaking of inversion symmetry between CuO2 planes.”
From Ultrafast terahertz emission from emerging symmetry-broken materials (2023) · cites this paper as [71]
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 49 · Cited by 17
Research works printed but not linked: 12
- [9]N. Kida, K. Takahashi, M. Tonouchi, Effect of charge ordering and disordering on terahertz radiation characteristics of magnetoresistive Pr0.7Ca0.3MnO3 thin films. Opt. Lett. 29, 2554– 2556 (2004). 15584292
- [11]K. Takahashi, N. Kida, M. Tonouchi, Terahertz radiation by an ultrafast spontaneous polarization modulation of multiferroic BiFeO3 thin films. Phys. Rev. Lett. 96, 117402 (2006). 16605869
- [18]R. V. Mikhaylovskiy, Terahertz emission spectroscopy of laser-induced spin dynamics in TmFeO3 and ErFeO3 orthoferrites. Phys. Rev. B 90, 184405 (2014).
- [22]M. Tonouchi, Recent topics in high-Tc superconductive electronics. Jpn. J. Appl. Phys. 44, 7735 (2005).
- [27]M. Hücker, Stripe order in superconducting La2−xBaxCuO4 (0.095⩽x⩽0.155). Phys. Rev. B 83, 104506 (2011).
- [34]H. Miao, Formation of incommensurate charge density waves in cuprates. Phys. Rev. X 9, 031042 (2019).
- [36]E. Casandruc, Wavelength-dependent optical enhancement of superconducting interlayer coupling in La1.885Ba0.115CuO4. Phys. Rev. B 91, 174502 (2015).
- [37]K. A. Cremin, Photoenhanced metastable c-axis electrodynamics in stripe-ordered cuprate La1.885Ba0.115CuO4. Proc. Natl. Acad. Sci. U.S.A. 116, 19875– 19879 (2019). 31527271 PMC6778182
- [40]V. Khanna, Restoring interlayer Josephson coupling in La1.885Ba0.115CuO4 by charge transfer melting of stripe order. Phys. Rev. B 93, 224522 (2016).
- [43]P. E. Dolgirev, Theory for anomalous terahertz emission in striped cuprate superconductors. arXiv:2112.05772 (2021). · arXiv
- [44]P. E. Dolgirev, Optically-induced Umklapp shift currents in striped cuprates. arXiv:2203.04687 (2022). · arXiv
- [47]F. J. Dunmore, Observation of below-gap plasmon excitations in superconducting YBa2Cu3O7 films. Phys. Rev. B 52, R731– R734 (1995). 9980738
- Authors
- Nicoletti, D., Buzzi, M., Fechner, M., Dolgirev, P. E., Michael, M. H., Curtis, J. B., Demler, E., Gu, G. D., & Cavalleri, A.
- Affiliations
- Max Planck Institute for the Structure and Dynamics of Matter (DE)
- Harvard University (US)
- ETH Zurich (CH)
- Brookhaven National Laboratory (US)
- University of Oxford (GB)
- Corresponding author
- Nicoletti, D.
- ORCID
- Venue
- Proceedings of the National Academy of Sciences
- Publisher
- National Academy of Sciences
- Published
- 2022-09-20
- Volume
- 119
- Issue
- 39
- Pages
- e2211670119-e2211670119
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- PMC
- PMC9522412
- OpenAlex
- W4296938488
- Cited by
- 17
- References
- 49
- Citations by year
- 2026: 3 · 2025: 5 · 2024: 5 · 2023: 4
- FWCI
- 1.30
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Proceedings of the National Academy of Sciences (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
- Repository for Publications and Research Data (ETH Zurich) (submittedVersion, cc-by)
- arXiv (Cornell University)
- ETH Zürich Research Collection
- Funders
- EC | European Research Council (319286)
- Deutsche Forschungsgemeinschaft (194651731, 170620586)
- DOD | USAF | AMC | Air Force Office of Scientific Research (FA95501610323)
- DOE | SC | Basic Energy Sciences (DE-SC0012704)
- Topics
- Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Physics of Superconductivity and Magnetism
- Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Advanced Condensed Matter Physics
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Magnetic and transport properties of perovskites and related materials
- Keywords
- terahertz emission, charge ordering, superconductivity, La2-xBaxCuO4, dark mode, coherent radiation
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
