Pressure-induced superconductivity in polycrystalline La3Ni2O7
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2023
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866916151212113920 |
|---|---|
| author | Wang, Gang Wang, Ningning Hou, Jun Ma, Liang Shi, Lifen Ren, Zhian Gu, Yadong Shen, Xiaoling Ma, Hanming Yang, Pengtao Liu, Ziyi Guo, Haizhong Sun, Jianping Zhang, Guangming Yan, Jiaqiang Wang, Bosen Uwatoko, Yoshiya Cheng, Jinguang |
| author_facet | Wang, Gang Wang, Ningning Hou, Jun Ma, Liang Shi, Lifen Ren, Zhian Gu, Yadong Shen, Xiaoling Ma, Hanming Yang, Pengtao Liu, Ziyi Guo, Haizhong Sun, Jianping Zhang, Guangming Yan, Jiaqiang Wang, Bosen Uwatoko, Yoshiya Cheng, Jinguang |
| contents | We synthesized polycrystalline La3Ni2O7 samples by using the sol-gel method without post-annealing under high oxygen pressure, and then measured temperature-dependent resistivity under various hydrostatic pressures up to 14.5 GPa in a cubic anvil cell apparatus. We find that the density-wave-like anomaly in resistivity is progressively suppressed with increasing pressure and the resistivity drop corresponding to the onset of superconductivity emerges at pressure as low as 7 GPa. Zero resistivity is achieved at 9 GPa below 6.6 K, which increases quickly with pressure to 35.6 K at 14.5 GPa. The observation of zero-resistance state in the polycrystalline La3Ni2O7 samples under high pressures not only corroborates the recent report of superconductivity in the pressurized La3Ni2O7 crystals but also facilitates further studies on this emerging family of nickelate high-Tc superconductors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2309_17378 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Pressure-induced superconductivity in polycrystalline La3Ni2O7 Wang, Gang Wang, Ningning Hou, Jun Ma, Liang Shi, Lifen Ren, Zhian Gu, Yadong Shen, Xiaoling Ma, Hanming Yang, Pengtao Liu, Ziyi Guo, Haizhong Sun, Jianping Zhang, Guangming Yan, Jiaqiang Wang, Bosen Uwatoko, Yoshiya Cheng, Jinguang Superconductivity Strongly Correlated Electrons We synthesized polycrystalline La3Ni2O7 samples by using the sol-gel method without post-annealing under high oxygen pressure, and then measured temperature-dependent resistivity under various hydrostatic pressures up to 14.5 GPa in a cubic anvil cell apparatus. We find that the density-wave-like anomaly in resistivity is progressively suppressed with increasing pressure and the resistivity drop corresponding to the onset of superconductivity emerges at pressure as low as 7 GPa. Zero resistivity is achieved at 9 GPa below 6.6 K, which increases quickly with pressure to 35.6 K at 14.5 GPa. The observation of zero-resistance state in the polycrystalline La3Ni2O7 samples under high pressures not only corroborates the recent report of superconductivity in the pressurized La3Ni2O7 crystals but also facilitates further studies on this emerging family of nickelate high-Tc superconductors. |
| title | Pressure-induced superconductivity in polycrystalline La3Ni2O7 |
| topic | Superconductivity Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2309.17378 |