Some features of high-temperature superconductivity on flat bands

V. R. Shaginyan; A. Z. Msezane; S. A. Artamonov

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arXiv · 2608.10231

Some features of high-temperature superconductivity on flat bands

V. R. Shaginyan·A. Z. Msezane·S. A. Artamonov

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Abstract

In this letter, we examine how the presence of flat band leads to the formation of a high-temperature superconductor even in the case of repulsive pairing interactions. We also show that in the case of flat bands, the high-temperature superconducting state deforms the flat band, tilting it and making the effective mass finite. As a result, neither the superfluid weight nor the supercurrent disappear. Our results are in good agreement with experimental data.

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V. R. Shaginyan, A. Z. Msezane, S. A. Artamonov. 2026-08-10. Some features of high-temperature superconductivity on flat bands. https://arxiv.org/abs/2608.10231

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