Ultrafast Dynamics of Bilayer and Trilayer Nickelate Superconductors
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866910926723088384 |
|---|---|
| author | Li, Y. D. Cao, Y. T. Liu, L. Y. Peng, P. Lin, H. Pei, C. Y. Zhang, M. X. Wu, H. Du, X. Zhao, W. X. Zhai, K. Y. Zhao, J. K. Lin, M. -L. Tan, P. H. Qi, Y. P. Li, G. Guo, H. J. Yang, Luyi Yang, L. X. |
| author_facet | Li, Y. D. Cao, Y. T. Liu, L. Y. Peng, P. Lin, H. Pei, C. Y. Zhang, M. X. Wu, H. Du, X. Zhao, W. X. Zhai, K. Y. Zhao, J. K. Lin, M. -L. Tan, P. H. Qi, Y. P. Li, G. Guo, H. J. Yang, Luyi Yang, L. X. |
| contents | In addition to the pressurized high-temperature superconductivity, bilayer and trilayer nickelate superconductors Lan+1NinO3n+1 (n = 2 and 3) exhibit many intriguing properties at ambient pressure, such as orbital-dependent electronic correlation, non-Fermi liquid behavior, and density-wave transitions. Here, using ultrafast reflectivity measurement, we observe a drastic difference between the ultrafast dynamics of the bilayer and trilayer nickelates at ambient pressure. Firstly, we observe a coherent phonon mode in La4Ni3O10 involving the collective vibration of La, Ni, and O atoms, which is absent in La3Ni2O7. Secondly, the temperature-dependent relaxation time diverges near the density-wave transition temperature of La4Ni3O10, in drastic contrast to kink-like changes in La3Ni2O7. Moreover, we estimate the electron-phonon coupling constants to be 0.05~0.07 and 0.12~0.16 for La3Ni2O7 and La4Ni3O10, respectively, suggesting a relatively minor role of electron-phonon coupling in the electronic properties of Lan+1NinO3n+1. Our work not only sheds light on the relevant microscopic interaction but also establishes a foundation for further studying the interplay between superconductivity and density-wave transitions in nickelate superconductors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_05012 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Ultrafast Dynamics of Bilayer and Trilayer Nickelate Superconductors Li, Y. D. Cao, Y. T. Liu, L. Y. Peng, P. Lin, H. Pei, C. Y. Zhang, M. X. Wu, H. Du, X. Zhao, W. X. Zhai, K. Y. Zhao, J. K. Lin, M. -L. Tan, P. H. Qi, Y. P. Li, G. Guo, H. J. Yang, Luyi Yang, L. X. Superconductivity Strongly Correlated Electrons In addition to the pressurized high-temperature superconductivity, bilayer and trilayer nickelate superconductors Lan+1NinO3n+1 (n = 2 and 3) exhibit many intriguing properties at ambient pressure, such as orbital-dependent electronic correlation, non-Fermi liquid behavior, and density-wave transitions. Here, using ultrafast reflectivity measurement, we observe a drastic difference between the ultrafast dynamics of the bilayer and trilayer nickelates at ambient pressure. Firstly, we observe a coherent phonon mode in La4Ni3O10 involving the collective vibration of La, Ni, and O atoms, which is absent in La3Ni2O7. Secondly, the temperature-dependent relaxation time diverges near the density-wave transition temperature of La4Ni3O10, in drastic contrast to kink-like changes in La3Ni2O7. Moreover, we estimate the electron-phonon coupling constants to be 0.05~0.07 and 0.12~0.16 for La3Ni2O7 and La4Ni3O10, respectively, suggesting a relatively minor role of electron-phonon coupling in the electronic properties of Lan+1NinO3n+1. Our work not only sheds light on the relevant microscopic interaction but also establishes a foundation for further studying the interplay between superconductivity and density-wave transitions in nickelate superconductors. |
| title | Ultrafast Dynamics of Bilayer and Trilayer Nickelate Superconductors |
| topic | Superconductivity Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2403.05012 |