Evolution of electronic band reconstruction in thickness-controlled perovskite SrRuO${}_3$ thin films

Abstract

Transition metal perovskite oxides display a variety of emergent phenomena which are tunable by tailoring the oxygen octahedral rotation. SrRuO${}_3$, a ferromagnetic perovskite oxide, is well-known to have various atomic structures and octahedral rotations when grown as thin films. However, how the electronic structure changes with the film thickness has been hardly studied. Here, by using angle-resolved photoemission spectroscopy and electron diffraction techniques, we study the electronic structure of SrRuO${}_3$ thin films as a function of the film thickness. Different reconstructed electronic structures and spectral weights are observed for films with various thicknesses. We suggest that octahedral rotations on the surface can be qualitatively estimated via comparison of intensities of different bands. Our observation and methodology shed light on how structural variation and transition may be understood in terms of photoemission spectroscopy data.

arXiv comment4 figures

References in corpus (12)

• Angle-resolved photoemission spectroscopy of the cuprate superconductors
• Weyl fermions and the anomalous Hall effect in metallic ferromagnets
• Room temperature Epitaxial Stabilization of a Tetragonal Phase in ARuO3 (A=Ca,Sr) Thin Films
• Quasiparticle Mass Enhancement and Temperature Dependence of the Electronic Structure of Ferromagnetic SrRuO3 Thin Films
• Controllable thickness inhomogeneity and Berry-curvature-engineering of anomalous Hall effect in SrRuO3 ultrathin films
• Interplay of octahedral rotations and breathing distortions in charge ordering perovskite oxides
• Spectral evolution in (Ca,Sr)RuO_3 near the Mott-Hubbard transition
• Sign-tunable anomalous Hall effect induced by two-dimensional symmetry-protected nodal structures in ferromagnetic perovskite oxide thin films
• Tight-binding Hamiltonians for Sr filled ruthenates: application to the gap anisotropy and Hall coefficient in Sr2RuO4
• Observation of spin-dependent dual ferromagnetism in perovskite ruthenates
• The origin of insulating and non-ferromagnetic SrRuO3 monolayers
• Stable hump-like Hall effect and non-coplanar spin textures in SrRuO${}_3$ ultrathin film

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