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  Theory for anomalous terahertz emission in striped cuprate superconductors

Dolgirev, P. E., Michael, M., Curtis, J. B., Nicoletti, D., Buzzi, M., Fechner, M., et al. (2023). Theory for anomalous terahertz emission in striped cuprate superconductors. Physical Review B, 108(18): L180508. doi:10.1103/PhysRevB.108.L180508.

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PhysRevB.108.L180508.pdf (Verlagsversion), 722KB
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2023
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© the Author(s). Published by the American Physical Society
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Supplemental Material: Details of the calculation for THz emission in a medium with stripes, dispersion of surface Josephson plasmons at large momenta and computed reflectivity from a medium with stripes.
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https://arxiv.org/abs/2112.05772 (Preprint)
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https://doi.org/10.1103/PhysRevB.108.L180508 (Verlagsversion)
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 Urheber:
Dolgirev, P. E.1, Autor
Michael, M.1, 2, Autor           
Curtis, J. B.1, 3, Autor
Nicoletti, D.4, Autor           
Buzzi, M.4, Autor           
Fechner, M.4, Autor           
Cavalleri, A.4, 5, Autor           
Demler, E.6, Autor
Affiliations:
1Department of Physics, Harvard University , ou_persistent22              
2Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
3John A. Paulson School of Engineering and Applied Sciences, Harvard University, ou_persistent22              
4Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938293              
5Clarendon Laboratory, University of Oxford, ou_persistent22              
6Institute for Theoretical Physics, ETH Zurich, ou_persistent22              

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 Zusammenfassung: Recent experiments in the doped cuprates La2−xBaxCuO4 have revealed the emission of anomalous terahertz radiation after impulsive optical excitation. Here, we theoretically investigate the nonlinear electrodynamics of such striped superconductors and explore the origin of the observed radiation. We argue that photoexcitation is converted into a photocurrent by a second-order optical nonlinearity, which is activated by the breaking of inversion symmetry in certain stripe configurations. We point out the importance of including umklapp photocurrents modulated at the stripe periodicity itself, which impulsively drive surface Josephson plasmons and lead to a resonant structure of outgoing radiation, consistent with the experiments. We speculate on the utility of the proposed mechanism in the context of generating tunable terahertz radiation.

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Sprache(n): eng - English
 Datum: 2023-02-012022-05-292023-10-162023-11-202023-11-01
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: arXiv: 2112.05772
DOI: 10.1103/PhysRevB.108.L180508
 Art des Abschluß: -

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Projektname : -
Grant ID : 319286
Förderprogramm : Funding Programme 7 (FP7)
Förderorganisation : European Commission (EC)
Projektname : We thank M. D. Lukin, M. Mitrano, I. Esterlis, N. Leitao, and P. Narang for fruitful discussions. P.E.D., M.H.M., and E.D. were supported by AFOSR-MURI, Photonic Quantum Matter Award No. FA95501610323, DARPA DRINQS, and the ARO grant “Control of Many-Body States Using Strong Coherent Light-Matter Coupling in Terahertz Cavities.” J.B.C. is supported by the Quantum Science Center (QSC), a National Quantum Information Science Research Center of the U.S. Department of Energy (DOE), and by the Harvard Quantum Initiative. J.B.C. also acknowledges hospitality from the Max Planck Institute for Structure and Dynamics of Matter (MPSD, Hamburg), and ETH Zürich Institute for Theoretical Physics. D.N., M.B., M.F., and A.C. acknowledge support from the European Research Council under the European Unions Seventh Framework Programme (FP7/2007-2013)/ERC Grant Agreement No. 319286 (QMAC), the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) via the excellence cluster The Hamburg Centre for Ultrafast Imaging (EXC 1074 Project ID 194651731), and the priority program SFB925 (Project ID 170620586).
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Quelle 1

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Titel: Physical Review B
  Kurztitel : Phys. Rev. B
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Woodbury, NY : American Physical Society
Seiten: - Band / Heft: 108 (18) Artikelnummer: L180508 Start- / Endseite: - Identifikator: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008