Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, INDIA
R. Vijayaraghavan School of Science and Humanities, Vellore Institute of Technology Vellore 632 014, INDIA
Abstract We investigate the nature and origin of the metal-insulator transition in Sr2 Ru1−x Tix O4 as a function of increasing Ti content (x). Employing detailed core, valence, and conduction band studies with x-ray and ultraviolet photoelectron spectroscopies along with Bremsstrahlung isochromat spectroscopy, it is shown that a hard gap opens up for Ti content ≥0.2, while compositions with x
