Photoemission spectroscopy studies of Mott-Hubbard systems
Hyeong-Do Kim
Pohang Accelerator Laboratory
Photoemission spectroscopy has been a powerful tool to probe the electronic structure of solids. Thanks to recent developments in energy and momentum resolutions of an electron energy analyzer, its one-to-one correspondence to a one-particle Green’s function of a many-body system enables us to compare directly an experimental spectral function with theoretical one especially for the strongly correlated electron system. In this talk, I will present photoemission spectra of several Mott-Hubbard systems including core-level ones to compare them with the dynamical mean-field theory of the Hubbard model which successfully describes the Mott metal-insulator transition.