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.

4 figures

References in corpus (4)

• 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
• Observation of spin-dependent dual ferromagnetism in perovskite ruthenates
• The origin of insulating and non-ferromagnetic SrRuO3 monolayers

Cited by in corpus (3)

• Electrical conductivity enhancement of epitaxially grown TiN thin films
• Band unfolding with a general transformation matrix: from code implementation to interpretation of photoemission spectra
• Strain tunable electronic ground states in two-dimensional iridate thin films