by ARPES

SrRuO₃ (SRO), one of the most famous perovskite metallic ferromagnets, has been the center of various research perspectives. One of the key issue with a long-time standing debate is the origin of ferromagnetism with metallicity. We studied the three-dimensional electronic structure of SRO single crystals by angle-resolved photoemission spectroscopy. We determined the inner potential of SRO single crystals for the first time. We also measured band dispersions on high symmetry planes and opened a way to cross-check theoretical electronic structures of SRO, which has not been accomplished during last 20 years. We also obtained temperature dependence of the ferromagnetic exchange splitting. These results implied the existence of short-range magnetic order above the Curie temperature and supported the dual nature of itinerant/local magnetism in SRO. Detailed experimental results and analyses will be presented and discussed.