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arXiv 2404.09162cond-mat.supr-con
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三层La$_4$Ni$_3$O$_{10}$超导体中由层间配对诱导的部分能隙费米面

Interlayer Pairing Induced Partially Gapped Fermi Surface in Trilayer La$_4$Ni$_3$O$_{10}$ Superconductors

Junkang Huang, Tao Zhou

AI总结:

本文通过自洽平均场计算研究三层La₄Ni₃O₁₀的超导配对机制,发现层间配对强于层内配对,并揭示部分能隙费米面及较低转变温度的成因。

摘要:

我们通过自洽平均场计算探索了三层$\mathrm{La}_4\mathrm{Ni}_3\mathrm{O}_{10}$材料中的超导配对机制。我们的研究结果表明,层内配对强度显著弱于层间配对。值得注意的是,在以层间配对为特征的状态中,我们探测到部分能隙费米面的存在,这一引人注目的现象可归因于$\mathrm{La}_4\mathrm{Ni}_3\mathrm{O}_{10}$内外导电层之间的差异。此外,本研究为在该化合物中观测到的较低超导转变温度提供了有价值的见解,有助于更深入地理解其独特的超导特性。

英文摘要:

We explore the superconducting pairing mechanisms in the trilayer $\mathrm{La}_4\mathrm{Ni}_3\mathrm{O}_{10}$ material through self-consistent mean-field calculations. Our findings demonstrate that intralayer pairings are substantially weaker compared to interlayer ones. Remarkably, in the state characterized by interlayer pairing, we detect the presence of partially gapped Fermi surfaces, a fascinating occurrence attributable to the disparity between the inner and outer conducting layers of $\mathrm{La}_4\mathrm{Ni}_3\mathrm{O}_{10}$. Moreover, this study provides valuable insights into the lower superconducting transition temperatures observed in $\mathrm{La}_4\mathrm{Ni}_3\mathrm{O}_{10}$ compounds. This contributes to a deeper understanding of its distinct superconducting attributes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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