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- W4377078049 abstract "A perfect Kagome lattice features flat bands that usually lead to strong electronic correlation effects, but how electronic correlation, in turn, stabilizes a perfect Kagome lattice has rarely been explored. Here, we study such effect in a superconducting ($T_c sim 7.8$ K) Kagome metal LaRu$_3$Si$_2$ with a distorted Kagome plane consisting of pure Ru ions, using density functional theory plus $U$ and plus dynamical mean-field theory. We find that increasing electronic correlation can stabilize a perfect Kagome lattice and induce substantial ferromagnetic fluctuations in LaRu$_3$Si$_2$. By comparing the calculated magnetic susceptibilities to experimental data, LaRu$_3$Si$_2$ is found to be on the verge of becoming a perfect Kagome lattice. It thus shows moderate but non-negligible electronic correlations and ferromagnetic fluctuations, which are crucial to understanding the experimentally observed non-Fermi-liquid behavior and the pretty high superconducting $T_c$ of LaRu$_3$Si$_2$." @default.
- W4377078049 created "2023-05-20" @default.
- W4377078049 creator A5084903015 @default.
- W4377078049 date "2023-01-01" @default.
- W4377078049 modified "2023-10-18" @default.
- W4377078049 title "Electronic correlation effects on stabilizing a perfect Kagome lattice and ferromagnetic fluctuation in LaRu<sub>3</sub>Si<sub>2</sub>" @default.
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- W4377078049 doi "https://doi.org/10.52396/justc-2022-0182" @default.
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