Band structure of organic-ion-intercalated (EMIM)$_x$FeSe superconductor

L. V. Begunovich; M. M. Korshunov

doi:10.3390/ma15051856

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arXiv · 2201.00465

Band structure of organic-ion-intercalated (EMIM)$_x$FeSe superconductor

L. V. Begunovich·M. M. Korshunov

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Abstract

The band structure and the Fermi surface of the recently discovered superconductor (EMIM)$_x$FeSe are studied within the density functional theory in the generalized gradient approximation. We show that the bands near the Fermi level are formed primarily by Fe-$d$ orbitals. Although there is no direct contribution of EMIM orbitals to the near-Fermi level states, the presence of organic cations leads to a shift of the chemical potential. It results in the appearance of small electron pockets in the quasi-two-dimensional Fermi surface of (EMIM)$_x$FeSe.

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L. V. Begunovich, M. M. Korshunov. 2022-01-03. Band structure of organic-ion-intercalated (EMIM)$_x$FeSe superconductor. https://doi.org/10.3390/ma15051856

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