Isotropic superconductivity in pressurized trilayer nickelate La4Ni3O10
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arXiv
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| Auteurs principaux: | , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866929722282213376 |
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| author | Peng, Di Bian, Yaolong Xing, Zhenfang Chen, Lixing Cai, Jiaqiang Luo, Tao Lan, Fujun Liu, Yuxin Zhu, Yinghao Zhang, Enkang Wang, Zhaosheng Sun, Yuping Wang, Yuzhu Wang, Xingya Wang, Chenyue Yang, Yuqi Yang, Yanping Dong, Hongliang Lou, Hongbo Zeng, Zhidan Zeng, Zhi Tian, Mingliang Zhao, Jun Zeng, Qiaoshi Zhang, Jinglei Mao, Ho-kwang |
| author_facet | Peng, Di Bian, Yaolong Xing, Zhenfang Chen, Lixing Cai, Jiaqiang Luo, Tao Lan, Fujun Liu, Yuxin Zhu, Yinghao Zhang, Enkang Wang, Zhaosheng Sun, Yuping Wang, Yuzhu Wang, Xingya Wang, Chenyue Yang, Yuqi Yang, Yanping Dong, Hongliang Lou, Hongbo Zeng, Zhidan Zeng, Zhi Tian, Mingliang Zhao, Jun Zeng, Qiaoshi Zhang, Jinglei Mao, Ho-kwang |
| contents | Evidence of superconductivity (SC) has recently been reported in pressurized La3Ni2O7 and La4Ni3O10, providing a new platform to explore high-temperature superconductivity. However, while zero resistance state has been observed, experimental characterization of the superconducting properties of pressurized nickelates is still limited and experimentally challenging. Here, we present the first full temperature dependence of the upper critical field Hc2 measurement in La4Ni3O10 single crystal, achieved by combining high magnetic field and high-pressure techniques. Remarkably, the Hc2 of La4Ni3O10 is nearly isotropic, with the anisotropic parameter monotonically increasing from 1.4 near Tc to 1 at lower temperatures. By analyzing the Hc2 using the two-band model, we uncover that the anisotropic diffusivity of the bands, primarily originating from d(z2 ) and d(x2-y2 ) orbitals, is well compensated, resulting in an unusually isotropic superconducting state. These findings provide critical experimental evidence that underscores the significant role of the d(z2 ) orbital in enabling superconductivity in pressurized Ruddlesden-Popper nickelates. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_14410 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Isotropic superconductivity in pressurized trilayer nickelate La4Ni3O10 Peng, Di Bian, Yaolong Xing, Zhenfang Chen, Lixing Cai, Jiaqiang Luo, Tao Lan, Fujun Liu, Yuxin Zhu, Yinghao Zhang, Enkang Wang, Zhaosheng Sun, Yuping Wang, Yuzhu Wang, Xingya Wang, Chenyue Yang, Yuqi Yang, Yanping Dong, Hongliang Lou, Hongbo Zeng, Zhidan Zeng, Zhi Tian, Mingliang Zhao, Jun Zeng, Qiaoshi Zhang, Jinglei Mao, Ho-kwang Superconductivity Strongly Correlated Electrons Evidence of superconductivity (SC) has recently been reported in pressurized La3Ni2O7 and La4Ni3O10, providing a new platform to explore high-temperature superconductivity. However, while zero resistance state has been observed, experimental characterization of the superconducting properties of pressurized nickelates is still limited and experimentally challenging. Here, we present the first full temperature dependence of the upper critical field Hc2 measurement in La4Ni3O10 single crystal, achieved by combining high magnetic field and high-pressure techniques. Remarkably, the Hc2 of La4Ni3O10 is nearly isotropic, with the anisotropic parameter monotonically increasing from 1.4 near Tc to 1 at lower temperatures. By analyzing the Hc2 using the two-band model, we uncover that the anisotropic diffusivity of the bands, primarily originating from d(z2 ) and d(x2-y2 ) orbitals, is well compensated, resulting in an unusually isotropic superconducting state. These findings provide critical experimental evidence that underscores the significant role of the d(z2 ) orbital in enabling superconductivity in pressurized Ruddlesden-Popper nickelates. |
| title | Isotropic superconductivity in pressurized trilayer nickelate La4Ni3O10 |
| topic | Superconductivity Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2502.14410 |