Technique for bulk Fermiology by photoemission applied to layered ruthenates

Abstract

We report the Fermi surfaces of the superconductor Sr2RuO4 and the non-superconductor Sr1.8Ca0.2RuO4 probed by bulk-sensitive high-energy angle-resolved photoemission. It is found that there is one square-shaped hole-like, one square-shaped electron-like and one circle-shaped electron-like Fermi surface in both compounds. These results provide direct evidence for nesting instability giving rise to magnetic fluctuations. Our study clarifies that the electron correlation effects are changed with composition depending on the individual band.

5 pages, 3 figures including 2 color figures

References in corpus (6)

• Angle-resolved photoemission spectroscopy of the cuprate superconductors
• Fermi Surface, Surface States, and Surface Reconstruction in Sr2RuO4
• Evidence for incommensurate spin fluctuations in Sr_2RuO_4
• Structural and magnetic aspects of the metal insulator transition in Ca${}_{2-x}$Sr${}_x$RuO${}_4$
• Competitions in layered ruthenates: ferro- vs. antiferromagnetism and triplet vs. singlet pairing
• Prominent quasi-particle peak in the photoemission spectrum of the metallic phase of V_2O_3

Cited by in corpus (14)

• Strong spin-orbit coupling effects on the Fermi surface of Sr2RuO4 and Sr2RhO4
• Evidence for strong electronic correlations in the spectra of Sr${}_2$RuO${}_4$
• Electronic structures of CeRu${}_2{X}_2$ ($X$ = Si, Ge) in the paramagnetic phase studied by soft X-ray ARPES and hard X-ray photoelectron spectroscopy
• Itinerant to localized transition of f electrons in antiferromagnetic superconductor UPd2Al3
• Electron correlation in FeSe superconductor studied by bulk-sensitive photoemission spectroscopy
• Charge dynamics in strongly correlated one-dimensional Cu-O chain systems revealed by inelastic X-ray scattering
• Bulk Nature of Layered Perovskite Iridates beyond the Mott Scenario : An Approach from Bulk Sensitive Photoemission Study
• Itinerant U 5f band states in the layered compound UFeGa5 observed by soft X-ray angle-resolved photoemission spectroscopy
• Surface and bulk electronic structure of unconventional superconductor Sr_2RuO_4: unusual splitting of the beta-band
• Three-dimensional electronic structures and the metal-insulator transition in Ruddlesden-Popper iridates
• The case for the bulk nature of the spectroscopic Luttinger liquid signatures observed in angle resolved photoemission of Li0.9Mo6O17
• Depth dependence of itinerant character in Mn-substituted Sr3Ru2O7
• Tetragonal-phase SnOFeSe: A possible parent compound of FeSe-based superconductor
• Three-Dimensional Fermiology by Soft-X-Ray ARPES: Origin of Charge Density Waves in VSe2