تقرير
Emergence of pseudogap from short-range spin-correlations in electron doped cuprates
| العنوان: | Emergence of pseudogap from short-range spin-correlations in electron doped cuprates |
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| المؤلفون: | Boschini, F., Zonno, M., Razzoli, E., Day, R. P., Michiardi, M., Zwartsenberg, B., Nigge, P., Schneider, M., Neto, E. H. da Silva, Erb, A., Zhdanovich, S., Mills, A. K., Levy, G., Giannetti, C., Jones, D. J., Damascelli, A. |
| المصدر: | npj Quantum Mater. 5, 6 (2020) |
| سنة النشر: | 2018 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Superconductivity |
| الوصف: | Electron interactions are pivotal for defining the electronic structure of quantum materials. In particular, the strong electron Coulomb repulsion is considered the keystone for describing the emergence of exotic and/or ordered phases of quantum matter as disparate as high-temperature superconductivity and charge- or magnetic-order. However, a comprehensive understanding of fundamental electronic properties of quantum materials is often complicated by the appearance of an enigmatic partial suppression of low-energy electronic states, known as the pseudogap. Here we take advantage of ultrafast angle-resolved photoemission spectroscopy to unveil the temperature evolution of the low-energy density of states in the electron-doped cuprate Nd$_{\text{2-x}}$Ce$_{\text{x}}$CuO$_{\text{4}}$, an emblematic system where the pseudogap intertwines with magnetic degrees of freedom. By photoexciting the electronic system across the pseudogap onset temperature T*, we report the direct relation between the momentum-resolved pseudogap spectral features and the spin-correlation length with an unprecedented sensitivity. This transient approach, corroborated by mean field model calculations, allows us to establish the pseudogap in electron-doped cuprates as a precursor to the incipient antiferromagnetic order even when long-range antiferromagnetic correlations are not established, as in the case of optimal doping. Comment: 17 pages, 3 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1038/s41535-020-0208-6 |
| URL الوصول: | http://arxiv.org/abs/1812.07583 |
| رقم الأكسشن: | edsarx.1812.07583 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1038/s41535-020-0208-6 |
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