Electronic Structure and Magnetism of the Triple-layer Ruthenate Sr₄Ru₃O₁₀

We report electronic band structure calculations for Sr₄Ru₃O₁₀ to analyze the character of the bands and compare with recent spin-resolved ARPES experiments [1]. That work has verified the primary predictions of our recently published calculations [2] and provided new information on the spectra. In this talk we examine in more detail the Fermi surfaces for the majority and minority spin bands and the narrow spin polarized bands near the Fermi energy. We consider the dependence on the functional used in the calculations and the role of the rotations of the oxygen octahedra, which have previously been argued to be important for stabilizing the ferromagnetism, and we analyze the contributions of the different layers to the magnetism and the individual bands.

[1] P. Ngabonziza, et al., abstract in this meeting and in preparation.

[2] G. Gebreyesus, et al., Phys. Rev. B 105, 165119 (2022)