2021/02/28 by Andrzej Ptok, Konrad Jerzy Kapcia, Konrad J. Kapcia +4 · 1 citation
Chemistry · Materials Science · Mathematics · Physics and Astronomy · #Atomic orbital #Chemistry #Condensed matter physics #Crystallography #Electron #Electronic structure #Fermi level #Iron-based superconductors research #Mathematics #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Rare-earth and actinide compounds #Realization (probability) #Statistics #Superconductivity #cond-mat.mtrl-sci #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.104.l041109
published as Phys. Rev. B 104, 041109 (2021) · 8 pages, 5 figures; Supplemental Material: 10 pages, 8 figures
openalex created_date 2021/02/15 · arxiv created 2021/04/22 · openalex publication_date 2021/07/21 · arxiv updated 2021/08/04 · openalex updated_date 2026/08/05
The recently discovered heavy fermion CeRh2As2 compound crystallizes in nonsymmorphic P4/nmm symmetry, which enables the occurrence of topological protection. Experimental results show that this material exhibits unusual behavior, which is manifested by the appearance of two superconducting phases. In this Letter, we uncover and discuss the role of Rh2As2 layers and their impact on the electronic and dynamical properties of the system. The location of Ce atoms between two nonequivalent layers allows for the realization of orbital order. We point out that the electronic band structure around the Fermi level is associated mostly with Ce 4f and Rh 4d orbitals and suggest the occurrence of the Lifshitz transition induced by an external magnetic field. We discuss also the role played by the f\ensuremath-d orbital hybridization in the electronic band structure.