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High-resolution photoemission on Sr2RuO4 reveals correlation-enhanced effective spin-orbit coupling and dominantly local self-energies

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High-resolution photoemission on Sr2RuO4 reveals correlation-enhanced effective spin-orbit coupling and dominantly local self-energies. / Tamai, A.; Zingl, M.; Rozbicki, Emil Jerzy; Cappelli, E.; Riccò, S.; de la Torre, A.; McKeown-Walker, S.; Bruno, F. Y.; King, Philip David; Meevasana, W.; Shi, M.; Radović, M.; Plumb, N. C.; Gibbs, Alexandra Sarah; Mackenzie, Andrew Peter; Berthod, C.; Strand, H. U. R.; Kim, M.; Georges, A.; Baumberger, F.

In: Physical Review X, Vol. 9, No. 2, 021048, 06.2019.

Research output: Contribution to journalArticlepeer-review

Harvard

Tamai, A, Zingl, M, Rozbicki, EJ, Cappelli, E, Riccò, S, de la Torre, A, McKeown-Walker, S, Bruno, FY, King, PD, Meevasana, W, Shi, M, Radović, M, Plumb, NC, Gibbs, AS, Mackenzie, AP, Berthod, C, Strand, HUR, Kim, M, Georges, A & Baumberger, F 2019, 'High-resolution photoemission on Sr2RuO4 reveals correlation-enhanced effective spin-orbit coupling and dominantly local self-energies', Physical Review X, vol. 9, no. 2, 021048. https://doi.org/10.1103/PhysRevX.9.021048

APA

Tamai, A., Zingl, M., Rozbicki, E. J., Cappelli, E., Riccò, S., de la Torre, A., McKeown-Walker, S., Bruno, F. Y., King, P. D., Meevasana, W., Shi, M., Radović, M., Plumb, N. C., Gibbs, A. S., Mackenzie, A. P., Berthod, C., Strand, H. U. R., Kim, M., Georges, A., & Baumberger, F. (2019). High-resolution photoemission on Sr2RuO4 reveals correlation-enhanced effective spin-orbit coupling and dominantly local self-energies. Physical Review X, 9(2), [021048]. https://doi.org/10.1103/PhysRevX.9.021048

Vancouver

Tamai A, Zingl M, Rozbicki EJ, Cappelli E, Riccò S, de la Torre A et al. High-resolution photoemission on Sr2RuO4 reveals correlation-enhanced effective spin-orbit coupling and dominantly local self-energies. Physical Review X. 2019 Jun;9(2). 021048. https://doi.org/10.1103/PhysRevX.9.021048

Author

Tamai, A. ; Zingl, M. ; Rozbicki, Emil Jerzy ; Cappelli, E. ; Riccò, S. ; de la Torre, A. ; McKeown-Walker, S. ; Bruno, F. Y. ; King, Philip David ; Meevasana, W. ; Shi, M. ; Radović, M. ; Plumb, N. C. ; Gibbs, Alexandra Sarah ; Mackenzie, Andrew Peter ; Berthod, C. ; Strand, H. U. R. ; Kim, M. ; Georges, A. ; Baumberger, F. / High-resolution photoemission on Sr2RuO4 reveals correlation-enhanced effective spin-orbit coupling and dominantly local self-energies. In: Physical Review X. 2019 ; Vol. 9, No. 2.

Bibtex - Download

@article{1c23269ca137442fa9da81975a5b2dd5,
title = "High-resolution photoemission on Sr2RuO4 reveals correlation-enhanced effective spin-orbit coupling and dominantly local self-energies",
abstract = "We explore the interplay of electron-electron correlations and spin-orbit coupling in the model Fermi liquid Sr2RuO4 using laser-based angle-resolved photoemission spectroscopy. Our precise measurement of the Fermi surface confirms the importance of spin-orbit coupling in this material and reveals that its effective value is enhanced by a factor of about 2, due to electronic correlations. The self-energies for the β and γ sheets are found to display significant angular dependence. By taking into account the multi-orbital composition of quasiparticle states, we determine self-energies associated with each orbital component directly from the experimental data. This analysis demonstrates that the perceived angular dependence does not imply momentum-dependent many-body effects but arises from a substantial orbital mixing induced by spin-orbit coupling. A comparison to single-site dynamical mean-field theory further supports the notion of dominantly local orbital self-energies and provides strong evidence for an electronic origin of the observed nonlinear frequency dependence of the self-energies, leading to “kinks” in the quasiparticle dispersion of Sr2RuO4.",
author = "A. Tamai and M. Zingl and Rozbicki, {Emil Jerzy} and E. Cappelli and S. Ricc{\`o} and {de la Torre}, A. and S. McKeown-Walker and Bruno, {F. Y.} and King, {Philip David} and W. Meevasana and M. Shi and M. Radovi{\'c} and Plumb, {N. C.} and Gibbs, {Alexandra Sarah} and Mackenzie, {Andrew Peter} and C. Berthod and Strand, {H. U. R.} and M. Kim and A. Georges and F. Baumberger",
note = "Funding: The experimental work has been supported by the European Research Council (ERC), the Scottish Funding Council, the UK EPSRC and the Swiss National Science Foundation (SNSF). Theoretical work was supported by the ERC grant ERC-319286-QMAC and by the SNSF (NCCR MARVEL).",
year = "2019",
month = jun,
doi = "10.1103/PhysRevX.9.021048",
language = "English",
volume = "9",
journal = "Physical Review X",
issn = "2160-3308",
publisher = "American Physical Society",
number = "2",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - High-resolution photoemission on Sr2RuO4 reveals correlation-enhanced effective spin-orbit coupling and dominantly local self-energies

AU - Tamai, A.

AU - Zingl, M.

AU - Rozbicki, Emil Jerzy

AU - Cappelli, E.

AU - Riccò, S.

AU - de la Torre, A.

AU - McKeown-Walker, S.

AU - Bruno, F. Y.

AU - King, Philip David

AU - Meevasana, W.

AU - Shi, M.

AU - Radović, M.

AU - Plumb, N. C.

AU - Gibbs, Alexandra Sarah

AU - Mackenzie, Andrew Peter

AU - Berthod, C.

AU - Strand, H. U. R.

AU - Kim, M.

AU - Georges, A.

AU - Baumberger, F.

N1 - Funding: The experimental work has been supported by the European Research Council (ERC), the Scottish Funding Council, the UK EPSRC and the Swiss National Science Foundation (SNSF). Theoretical work was supported by the ERC grant ERC-319286-QMAC and by the SNSF (NCCR MARVEL).

PY - 2019/6

Y1 - 2019/6

N2 - We explore the interplay of electron-electron correlations and spin-orbit coupling in the model Fermi liquid Sr2RuO4 using laser-based angle-resolved photoemission spectroscopy. Our precise measurement of the Fermi surface confirms the importance of spin-orbit coupling in this material and reveals that its effective value is enhanced by a factor of about 2, due to electronic correlations. The self-energies for the β and γ sheets are found to display significant angular dependence. By taking into account the multi-orbital composition of quasiparticle states, we determine self-energies associated with each orbital component directly from the experimental data. This analysis demonstrates that the perceived angular dependence does not imply momentum-dependent many-body effects but arises from a substantial orbital mixing induced by spin-orbit coupling. A comparison to single-site dynamical mean-field theory further supports the notion of dominantly local orbital self-energies and provides strong evidence for an electronic origin of the observed nonlinear frequency dependence of the self-energies, leading to “kinks” in the quasiparticle dispersion of Sr2RuO4.

AB - We explore the interplay of electron-electron correlations and spin-orbit coupling in the model Fermi liquid Sr2RuO4 using laser-based angle-resolved photoemission spectroscopy. Our precise measurement of the Fermi surface confirms the importance of spin-orbit coupling in this material and reveals that its effective value is enhanced by a factor of about 2, due to electronic correlations. The self-energies for the β and γ sheets are found to display significant angular dependence. By taking into account the multi-orbital composition of quasiparticle states, we determine self-energies associated with each orbital component directly from the experimental data. This analysis demonstrates that the perceived angular dependence does not imply momentum-dependent many-body effects but arises from a substantial orbital mixing induced by spin-orbit coupling. A comparison to single-site dynamical mean-field theory further supports the notion of dominantly local orbital self-energies and provides strong evidence for an electronic origin of the observed nonlinear frequency dependence of the self-energies, leading to “kinks” in the quasiparticle dispersion of Sr2RuO4.

U2 - 10.1103/PhysRevX.9.021048

DO - 10.1103/PhysRevX.9.021048

M3 - Article

VL - 9

JO - Physical Review X

JF - Physical Review X

SN - 2160-3308

IS - 2

M1 - 021048

ER -

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