Academic Journal
High-Resolution Photoemission on Sr_{2}RuO_{4} Reveals Correlation-Enhanced Effective Spin-Orbit Coupling and Dominantly Local Self-Energies
| العنوان: | High-Resolution Photoemission on Sr_{2}RuO_{4} Reveals Correlation-Enhanced Effective Spin-Orbit Coupling and Dominantly Local Self-Energies |
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| المؤلفون: | A. Tamai, M. Zingl, E. Rozbicki, E. Cappelli, S. Riccò, A. de la Torre, S. McKeown Walker, F. Y. Bruno, P. D. C. King, W. Meevasana, M. Shi, M. Radović, N. C. Plumb, A. S. Gibbs, A. P. Mackenzie, C. Berthod, H. U. R. Strand, M. Kim, A. Georges, F. Baumberger |
| المصدر: | Physical Review X, Vol 9, Iss 2, p 021048 (2019) |
| بيانات النشر: | American Physical Society |
| سنة النشر: | 2019 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | Physics, QC1-999 |
| الوصف: | We explore the interplay of electron-electron correlations and spin-orbit coupling in the model Fermi liquid Sr_{2}RuO_{4} 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 Sr_{2}RuO_{4}. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2160-3308 |
| Relation: | http://doi.org/10.1103/PhysRevX.9.021048; https://doaj.org/toc/2160-3308; https://doaj.org/article/75d9297f7fe04e00a31c7870fedeafcd |
| DOI: | 10.1103/PhysRevX.9.021048 |
| الاتاحة: | https://doi.org/10.1103/PhysRevX.9.021048 https://doaj.org/article/75d9297f7fe04e00a31c7870fedeafcd |
| رقم الانضمام: | edsbas.CF45D5C1 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 21603308 |
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| DOI: | 10.1103/PhysRevX.9.021048 |