Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2512.22783 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866914222059814912 |
|---|---|
| author | Zhang, Chen Chen, Lixing Wu, Qi-Yi Le, Congcong Wu, Xianxin Liu, Hao Chen, Bo Zhou, Ying Fu, Zhong-Tuo Lv, Chun-Hui Xu, Zi-Jie Deng, Hai-Long Zhang, Enkang Zhu, Yinghao Liu, H. Y. Duan, Yu-Xia Zhao, Jun Meng, Jian-Qiao |
| author_facet | Zhang, Chen Chen, Lixing Wu, Qi-Yi Le, Congcong Wu, Xianxin Liu, Hao Chen, Bo Zhou, Ying Fu, Zhong-Tuo Lv, Chun-Hui Xu, Zi-Jie Deng, Hai-Long Zhang, Enkang Zhu, Yinghao Liu, H. Y. Duan, Yu-Xia Zhao, Jun Meng, Jian-Qiao |
| contents | The recent discovery of high-temperature superconductivity in pressurized nickelates has renewed interest in the broken-symmetry states of their ambient-pressure parent phases, where a density-wave (DW) order emerges and competes with superconductivity, but its microscopic origin remains unresolved. Using ultrafast optical spectroscopy, we track quasiparticle relaxation dynamics across the DW transition at $T_{\rm DW} \approx$ 136 K in trilayer nickelate La$_4$Ni$_3$O$_{10}$ single crystals, revealing the opening of an energy gap of $\sim$ 52 meV. Multiple coherent phonons, including $A_g$ modes near 3.88, 5.28, and 2.09 THz, display pronounced mode-selective anomalies across the transition, demonstrating that the DW is coupled with lattice degree of freedom stabilized through electron-phonon coupling. At higher excitation densities, the DW is nonthermally suppressed, producing a temperature-fluence phase diagram that parallels pressure-tuned behavior. These results establish the DW in La$_4$Ni$_3$O$_{10}$ as a lattice-entangled instability involving multiple phonon modes, and highlight ultrafast optical excitation as a powerful tool to manipulate competing orders in nickelates. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_22783 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Lattice-Entangled Density Wave Instability and Nonthermal Melting in La$_4$Ni$_3$O$_{10}$ Zhang, Chen Chen, Lixing Wu, Qi-Yi Le, Congcong Wu, Xianxin Liu, Hao Chen, Bo Zhou, Ying Fu, Zhong-Tuo Lv, Chun-Hui Xu, Zi-Jie Deng, Hai-Long Zhang, Enkang Zhu, Yinghao Liu, H. Y. Duan, Yu-Xia Zhao, Jun Meng, Jian-Qiao Strongly Correlated Electrons Superconductivity The recent discovery of high-temperature superconductivity in pressurized nickelates has renewed interest in the broken-symmetry states of their ambient-pressure parent phases, where a density-wave (DW) order emerges and competes with superconductivity, but its microscopic origin remains unresolved. Using ultrafast optical spectroscopy, we track quasiparticle relaxation dynamics across the DW transition at $T_{\rm DW} \approx$ 136 K in trilayer nickelate La$_4$Ni$_3$O$_{10}$ single crystals, revealing the opening of an energy gap of $\sim$ 52 meV. Multiple coherent phonons, including $A_g$ modes near 3.88, 5.28, and 2.09 THz, display pronounced mode-selective anomalies across the transition, demonstrating that the DW is coupled with lattice degree of freedom stabilized through electron-phonon coupling. At higher excitation densities, the DW is nonthermally suppressed, producing a temperature-fluence phase diagram that parallels pressure-tuned behavior. These results establish the DW in La$_4$Ni$_3$O$_{10}$ as a lattice-entangled instability involving multiple phonon modes, and highlight ultrafast optical excitation as a powerful tool to manipulate competing orders in nickelates. |
| title | Lattice-Entangled Density Wave Instability and Nonthermal Melting in La$_4$Ni$_3$O$_{10}$ |
| topic | Strongly Correlated Electrons Superconductivity |
| url | https://arxiv.org/abs/2512.22783 |