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

Jonathon Mark Riley; F Caruso; C Verdi; L Duffy; Matthew David Watson; Lewis Bawden; K Volckaert; G van der Laan; T Hesjedal; M Hoesch; F Giustino; Philip David King

doi:10.1038/s41467-018-04749-w

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

Jonathon Mark Riley, F Caruso, C Verdi, L Duffy, Matthew David Watson, Lewis Bawden, K Volckaert, G van der Laan, T Hesjedal, M Hoesch, F Giustino, Philip David King

Research output: Contribution to journal › Article › peer-review

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 signicant 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.

Original language	English
Article number	2305
Number of pages	8
Journal	Nature Communications
Volume	9
DOIs	https://doi.org/10.1038/s41467-018-04749-w
Publication status	Published - 13 Jun 2018

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Riley-2018-Crossover-from-lattice-NComms-2305
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Philip Leverhulme Prize Award: Philip Leverhulme Prize Nomination
King, P. (PI)
The Leverhulme Trust
1/08/16 → 31/07/19
Project: Standard
Royal Society Research Fellowship: Electronic structure engineering of novel topological phases
King, P. (PI)
The Royal Society
1/10/13 → 30/09/18
Project: Fellowship

Crossover from Lattice to Plasmonic Polarons of a Spin-Polarised Electron Gas in Ferromagnetic EuO (dataset)
Riley, J. M. (Creator), Caruso, F. (Creator), Verdi, C. (Creator), Duffy, L. B. (Creator), Watson, M. D. (Creator), Bawden, L. (Creator), Volckaert, K. (Creator), van der Laan, G. (Creator), Hesjedal, T. (Creator), Hoesch, M. (Creator), Giustino, F. (Creator) & King, P. D. (Creator), University of St Andrews, 10 Jul 2018
DOI: 10.17630/4e82a731-57c6-4cf5-b8c2-841486b8dbde
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author = "Riley, {Jonathon Mark} and F Caruso and C Verdi and L Duffy and Watson, {Matthew David} and Lewis Bawden and K Volckaert and {van der Laan}, G and T Hesjedal and M Hoesch and F Giustino and King, {Philip David}",

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doi = "10.1038/s41467-018-04749-w",

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T1 - Crossover from lattice to plasmonic polarons of a spin-polarised electron gas in ferromagnetic EuO

AU - Riley, Jonathon Mark

AU - Caruso, F

AU - Verdi, C

AU - Duffy, L

AU - Watson, Matthew David

AU - Bawden, Lewis

AU - Volckaert, K

AU - van der Laan, G

AU - Hesjedal, T

AU - Hoesch, M

AU - Giustino, F

AU - King, Philip David

PY - 2018/6/13

Y1 - 2018/6/13

N2 - 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 signicant 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.

AB - 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 signicant 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.

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DO - 10.1038/s41467-018-04749-w

M3 - Article

SN - 2041-1723

VL - 9

JO - Nature Communications

JF - Nature Communications

M1 - 2305

ER -

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

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Projects

Philip Leverhulme Prize Award: Philip Leverhulme Prize Nomination

Royal Society Research Fellowship: Electronic structure engineering of novel topological phases

Datasets

Crossover from Lattice to Plasmonic Polarons of a Spin-Polarised Electron Gas in Ferromagnetic EuO (dataset)

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