تقرير
Charge Order Lock-in by Electron-Phonon Coupling in La$_{1.675}$Eu$_{0.2}$Sr$_{0.125}$CuO$_4$
| العنوان: | Charge Order Lock-in by Electron-Phonon Coupling in La$_{1.675}$Eu$_{0.2}$Sr$_{0.125}$CuO$_4$ |
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| المؤلفون: | Wang, Qisi, von Arx, K., Horio, M., Mukkattukavil, D. John, Küspert, J., Sassa, Y., Schmitt, T., Nag, A., Pyon, S., Takayama, T., Takagi, H., Garcia-Fernandez, M., Zhou, Ke-Jin, Chang, J. |
| المصدر: | Science Advances 7, eabg7394 (2021) |
| سنة النشر: | 2020 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Superconductivity, Condensed Matter - Strongly Correlated Electrons |
| الوصف: | We report an ultrahigh resolution resonant inelastic x-ray scattering (RIXS) study of the in-plane bond-stretching phonon mode in stripe-ordered cuprate La$_{1.675}$Eu$_{0.2}$Sr$_{0.125}$CuO$_4$. Phonon softening and lifetime shortening are found around the charge ordering wave vector. In addition to these self-energy effects, the electron-phonon coupling is probed by its proportionality to the RIXS cross section. We find an enhancement of the electron-phonon coupling around the charge-stripe ordering wave vector upon cooling into the low-temperature tetragonal structure phase. These results suggest that in addition to electronic correlations, electron-phonon coupling contributes significantly to the emergence of long-range charge-stripe order in cuprates. Comment: Supplemental Material available on request |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1126/sciadv.abg7394 |
| URL الوصول: | http://arxiv.org/abs/2012.10503 |
| رقم الأكسشن: | edsarx.2012.10503 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1126/sciadv.abg7394 |
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