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Crossover from lattice to plasmonic polarons of a spin-polarised electron gas in ferromagnetic EuO

Author

Listed:
  • J. M. Riley

    (University of St. Andrews
    Diamond Light Source)

  • F. Caruso

    (University of Oxford
    Humboldt-Universität zu Berlin)

  • C. Verdi

    (University of Oxford)

  • L. B. Duffy

    (University of Oxford
    Rutherford Appleton Laboratory)

  • M. D. Watson

    (University of St. Andrews
    Diamond Light Source)

  • L. Bawden

    (University of St. Andrews)

  • K. Volckaert

    (University of St. Andrews)

  • G. van der Laan

    (Diamond Light Source)

  • T. Hesjedal

    (University of Oxford)

  • M. Hoesch

    (Diamond Light Source
    Deutsches Elektronen-Synchrotron)

  • F. Giustino

    (University of Oxford
    Cornell University, Ithaca)

  • P. D. C. King

    (University of St. Andrews)

Abstract

Strong many-body interactions in solids yield a host of fascinating and potentially useful physical properties. Here, from angle-resolved photoemission experiments and ab initio many-body calculations, we demonstrate how a strong coupling of conduction electrons with collective plasmon excitations of their own Fermi sea leads to the formation of plasmonic polarons in the doped ferromagnetic semiconductor EuO. We observe how these exhibit a significant tunability with charge carrier doping, leading to a polaronic liquid that is qualitatively distinct from its more conventional lattice-dominated analogue. Our study thus suggests powerful opportunities for tailoring quantum many-body interactions in solids via dilute charge carrier doping.

Suggested Citation

  • J. M. Riley & F. Caruso & C. Verdi & L. B. Duffy & M. D. Watson & L. Bawden & K. Volckaert & G. van der Laan & T. Hesjedal & M. Hoesch & F. Giustino & P. D. C. King, 2018. "Crossover from lattice to plasmonic polarons of a spin-polarised electron gas in ferromagnetic EuO," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-04749-w
    DOI: 10.1038/s41467-018-04749-w
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    Cited by:

    1. L. Kang & X. Du & J. S. Zhou & X. Gu & Y. J. Chen & R. Z. Xu & Q. Q. Zhang & S. C. Sun & Z. X. Yin & Y. W. Li & D. Pei & J. Zhang & R. K. Gu & Z. G. Wang & Z. K. Liu & R. Xiong & J. Shi & Y. Zhang & Y, 2021. "Band-selective Holstein polaron in Luttinger liquid material A0.3MoO3 (A = K, Rb)," Nature Communications, Nature, vol. 12(1), pages 1-7, December.
    2. Søren Ulstrup & Yann in ’t Veld & Jill A. Miwa & Alfred J. H. Jones & Kathleen M. McCreary & Jeremy T. Robinson & Berend T. Jonker & Simranjeet Singh & Roland J. Koch & Eli Rotenberg & Aaron Bostwick , 2024. "Observation of interlayer plasmon polaron in graphene/WS2 heterostructures," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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