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Unveiling a Novel Insulator-to-Metal Transition in La2NiO4+δ:Challenging High-Temperature Superconductivity Claimed for Single-Layer Lanthanum Nickelates
【摘要】 <正>La2NiO4 has a similar structure to La2CuO4 and was proposed as a high-temperature superconductor based on magnetic-moment measurements decades ago. Nevertheless, with the exception for electrical resistance drop behavior of about 4 orders of magnitude that is claimed to originate from the superconductivity ever observed in Sr-doped La2NiO4, most electrical data reported to date in La2NiO4 system exhibit a trivial insulating ground state.
【关键词】 superconductor；
Insulator；
trivial；
insulating；
Transition；
claimed；
exception；
originate；
magnitude；
orders；
【基金】 supported by the National Key Research and Development Program of China (Grant No. 2023YFF0804100);the National Natural Science Foundation of China (Grant Nos. 12274168, 12074141, and 42102030);Jilin Provincial Science and Technology Development Project (Grant Nos. 20210402054GH and 20220101011JC);the Program for Jilin University Science and Technology Innovative Research Team (Grant No. 2021-TD-05);the support from the Fundamental Research Funds for the Central Universities;National Major Science Facility Synergetic Extreme Condition User Facility Achievement Transformation Platform Construction (Grant No. 2021FGWCXNLJSKJ01)
- 【文献出处】 Chinese Physics Letters ,中国物理快报(英文版) , 编辑部邮箱 ,2024年09期
- 【分类号】O469
- 【下载频次】5