--- _id: '7792' abstract: - lang: eng text: Phonon polaritons—light coupled to lattice vibrations—in polar van der Waals crystals are promising candidates for controlling the flow of energy on the nanoscale due to their strong field confinement, anisotropic propagation and ultra-long lifetime in the picosecond range1,2,3,4,5. However, the lack of tunability of their narrow and material-specific spectral range—the Reststrahlen band—severely limits their technological implementation. Here, we demonstrate that intercalation of Na atoms in the van der Waals semiconductor α-V2O5 enables a broad spectral shift of Reststrahlen bands, and that the phonon polaritons excited show ultra-low losses (lifetime of 4 ± 1 ps), similar to phonon polaritons in a non-intercalated crystal (lifetime of 6 ± 1 ps). We expect our intercalation method to be applicable to other van der Waals crystals, opening the door for the use of phonon polaritons in broad spectral bands in the mid-infrared domain. acknowledgement: J.T.-G. and G.Á.-P. acknowledge support through the Severo Ochoa Program from the Government of the Principality of Asturias (nos. PA-18-PF-BP17-126 and PA-20-PF-BP19-053, respectively). J.M.-S. acknowledges finantial support from the Clarín Programme from the Government of the Principality of Asturias and a Marie Curie-COFUND grant (PA-18-ACB17-29) and the Ramón y Cajal Program from the Government of Spain (RYC2018-026196-I). K.C., X.P.A.G., H.V. and M.H.B. acknowledge the Air Force Office of Scientific Research (AFOSR) grant no. FA 9550-18-1-0030 for funding support. I.E. acknowledges financial support from the Spanish Ministry of Economy and Competitiveness (grant no. FIS2016-76617-P). A.Y.N. acknowledges the Spanish Ministry of Science, Innovation and Universities (national project no. MAT2017-88358-C3-3-R) and the Basque Government (grant no. IT1164-19). Q.B. acknowledges the support from Australian Research Council (grant nos. FT150100450, IH150100006 and CE170100039). R.H. acknowledges support from the Spanish Ministry of Economy, Industry, and Competitiveness (national project RTI2018-094830-B-100 and the Project MDM-2016-0618 of the María de Maeztu Units of Excellence Program) and the Basque Goverment (grant no. IT1164-19). P.A.-G. acknowledges support from the European Research Council under starting grant no. 715496, 2DNANOPTICA. article_processing_charge: No article_type: original author: - first_name: Javier full_name: Taboada-Gutiérrez, Javier last_name: Taboada-Gutiérrez - first_name: Gonzalo full_name: Álvarez-Pérez, Gonzalo last_name: Álvarez-Pérez - first_name: Jiahua full_name: Duan, Jiahua last_name: Duan - first_name: Weiliang full_name: Ma, Weiliang last_name: Ma - first_name: Kyle full_name: Crowley, Kyle last_name: Crowley - first_name: Ivan full_name: Prieto Gonzalez, Ivan id: 2A307FE2-F248-11E8-B48F-1D18A9856A87 last_name: Prieto Gonzalez orcid: 0000-0002-7370-5357 - first_name: Andrei full_name: Bylinkin, Andrei last_name: Bylinkin - first_name: Marta full_name: Autore, Marta last_name: Autore - first_name: Halyna full_name: Volkova, Halyna last_name: Volkova - first_name: Kenta full_name: Kimura, Kenta last_name: Kimura - first_name: Tsuyoshi full_name: Kimura, Tsuyoshi last_name: Kimura - first_name: M. H. full_name: Berger, M. H. last_name: Berger - first_name: Shaojuan full_name: Li, Shaojuan last_name: Li - first_name: Qiaoliang full_name: Bao, Qiaoliang last_name: Bao - first_name: Xuan P.A. full_name: Gao, Xuan P.A. last_name: Gao - first_name: Ion full_name: Errea, Ion last_name: Errea - first_name: Alexey Y. full_name: Nikitin, Alexey Y. last_name: Nikitin - first_name: Rainer full_name: Hillenbrand, Rainer last_name: Hillenbrand - first_name: Javier full_name: Martín-Sánchez, Javier last_name: Martín-Sánchez - first_name: Pablo full_name: Alonso-González, Pablo last_name: Alonso-González citation: ama: Taboada-Gutiérrez J, Álvarez-Pérez G, Duan J, et al. Broad spectral tuning of ultra-low-loss polaritons in a van der Waals crystal by intercalation. Nature Materials. 2020;19:964–968. doi:10.1038/s41563-020-0665-0 apa: Taboada-Gutiérrez, J., Álvarez-Pérez, G., Duan, J., Ma, W., Crowley, K., Prieto Gonzalez, I., … Alonso-González, P. (2020). Broad spectral tuning of ultra-low-loss polaritons in a van der Waals crystal by intercalation. Nature Materials. Springer Nature. https://doi.org/10.1038/s41563-020-0665-0 chicago: Taboada-Gutiérrez, Javier, Gonzalo Álvarez-Pérez, Jiahua Duan, Weiliang Ma, Kyle Crowley, Ivan Prieto Gonzalez, Andrei Bylinkin, et al. “Broad Spectral Tuning of Ultra-Low-Loss Polaritons in a van Der Waals Crystal by Intercalation.” Nature Materials. Springer Nature, 2020. https://doi.org/10.1038/s41563-020-0665-0. ieee: J. Taboada-Gutiérrez et al., “Broad spectral tuning of ultra-low-loss polaritons in a van der Waals crystal by intercalation,” Nature Materials, vol. 19. Springer Nature, pp. 964–968, 2020. ista: Taboada-Gutiérrez J, Álvarez-Pérez G, Duan J, Ma W, Crowley K, Prieto Gonzalez I, Bylinkin A, Autore M, Volkova H, Kimura K, Kimura T, Berger MH, Li S, Bao Q, Gao XPA, Errea I, Nikitin AY, Hillenbrand R, Martín-Sánchez J, Alonso-González P. 2020. Broad spectral tuning of ultra-low-loss polaritons in a van der Waals crystal by intercalation. Nature Materials. 19, 964–968. mla: Taboada-Gutiérrez, Javier, et al. “Broad Spectral Tuning of Ultra-Low-Loss Polaritons in a van Der Waals Crystal by Intercalation.” Nature Materials, vol. 19, Springer Nature, 2020, pp. 964–968, doi:10.1038/s41563-020-0665-0. short: J. Taboada-Gutiérrez, G. Álvarez-Pérez, J. Duan, W. Ma, K. Crowley, I. Prieto Gonzalez, A. Bylinkin, M. Autore, H. Volkova, K. Kimura, T. Kimura, M.H. Berger, S. Li, Q. Bao, X.P.A. Gao, I. Errea, A.Y. Nikitin, R. Hillenbrand, J. Martín-Sánchez, P. Alonso-González, Nature Materials 19 (2020) 964–968. date_created: 2020-05-03T22:00:49Z date_published: 2020-09-01T00:00:00Z date_updated: 2023-08-21T06:18:20Z day: '01' department: - _id: NanoFab doi: 10.1038/s41563-020-0665-0 external_id: isi: - '000526218500004' pmid: - '32284598' intvolume: ' 19' isi: 1 language: - iso: eng month: '09' oa_version: None page: 964–968 pmid: 1 publication: Nature Materials publication_identifier: eissn: - '14764660' issn: - '14761122' publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: Broad spectral tuning of ultra-low-loss polaritons in a van der Waals crystal by intercalation type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 19 year: '2020' ...