title: Pressure-induced metal-insulator transition in LaMnO3 is not of Mott-Hubbard type.
abstract: Calculations employing the local density approximation combined with static and dynamical mean field theories (LDA+U and LDA+DMFT) indicate that the metal-insulator transition observed at 32 GPa in paramagnetic LaMnO3 at room temperature is not a Mott-Hubbard transition, but is caused by orbital splitting of the majority-spin eg bands. For LaMnO3 to be insulating at pressures below 32 GPa, both on-site Coulomb repulsion and Jahn-Teller distortion are needed.
authors.affiliation: Max-Planck Institut für Festkörperforschung, D-70569 Stuttgart, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Yamasaki
authors.forename: M
authors.initials: M
authors.lastname: Feldbacher
authors.forename: Y-F
authors.initials: YF
authors.lastname: Yang
authors.forename: O K
authors.initials: OK
authors.lastname: Andersen
authors.forename: K
authors.initials: K
authors.lastname: Held