---
_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. <i>Nature
    Materials</i>. 2020;19:964–968. doi:<a href="https://doi.org/10.1038/s41563-020-0665-0">10.1038/s41563-020-0665-0</a>
  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. <i>Nature Materials</i>.
    Springer Nature. <a href="https://doi.org/10.1038/s41563-020-0665-0">https://doi.org/10.1038/s41563-020-0665-0</a>
  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.”
    <i>Nature Materials</i>. Springer Nature, 2020. <a href="https://doi.org/10.1038/s41563-020-0665-0">https://doi.org/10.1038/s41563-020-0665-0</a>.
  ieee: J. Taboada-Gutiérrez <i>et al.</i>, “Broad spectral tuning of ultra-low-loss
    polaritons in a van der Waals crystal by intercalation,” <i>Nature Materials</i>,
    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.” <i>Nature Materials</i>,
    vol. 19, Springer Nature, 2020, pp. 964–968, doi:<a href="https://doi.org/10.1038/s41563-020-0665-0">10.1038/s41563-020-0665-0</a>.
  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'
...