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- W4381252489 abstract "Recently it was claimed that nitrogen-doped lutetium hydride exhibited a near-ambient superconducting transition with a temperature of 294 K at a pressure of only 10 kbar, this pressure being several orders of magnitude lower than previously demonstrated for hydrides under pressure. In this paper, we investigate within DFT+U the electronic structure of both parent lutetium hydride LuH$_3$ and nitrogen doped lutetium hydride LuH$_{2.75}$N$_{0.25}$. We calculated corresponding bands, density of states and Fermi surfaces. It is shown that in the stoichiometric system the Lu-5d states cross the Fermi level while the H-1s states make almost no contribution at the Fermi level. However, with nitrogen doping, the N-2p states enter the Fermi level in large quantities and bring together a significant contribution from the H-1s states. The presence of N-2p and H-1s states at the Fermi level in a doped compound can facilitate the emergence of superconductivity. For instance, nitrogen doping almost doubles the value of DOS at the Fermi level. Simple BCS analysis shows that the nitrogen doping of LuH$_3$ can provide T$_c$ more than 100K and even increase it with further hole doping." @default.
- W4381252489 created "2023-06-20" @default.
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- W4381252489 date "2023-06-16" @default.
- W4381252489 modified "2023-10-03" @default.
- W4381252489 title "Anatomy of the band structure of the newest apparent near-ambient superconductor LuH$_{3-x}$N$_x$" @default.
- W4381252489 doi "https://doi.org/10.48550/arxiv.2306.09868" @default.
- W4381252489 hasPublicationYear "2023" @default.
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