Fig. 1: Electronic structure calculations of strained Sr2RuO4.
From: The superconductivity of Sr2RuO4 under c-axis uniaxial stress
a–c Cross-sections at kz = 0 of calculated Fermi surfaces of Sr2RuO4 at the indicated strains. The heavy dashed lines indicate the zone of the RuO2 sheet, and the thin gray lines the 3D zone of Sr2RuO4. X and Y label high-symmetry points of the RuO2 zone. (To simplify discussion, we refer throughout this paper to the X and Y points defined in the 2D zone, rather than the points of the full 3D zone). a The electron-to-open Lifshitz transition induced by in-plane strain, from Ref. 29. It occurs at εxx = −0.0075 in the calculation, and εxx = −0.0044 experimentally28. b Unstressed Sr2RuO4. c The electron-to-hole Lifshitz transition under c-axis compression. d Calculated Fermi-level DOS against energy for a series of strains εzz. e Calculated Fermi-level DOS against εzz.
