Origin of the crossover from polarons to Fermi liquids in transition metal oxides.

ABSTRACT: Transition metal oxides host a wealth of exotic phenomena ranging from charge, orbital and magnetic order to nontrivial topological phases and superconductivity. In order to translate these unique materials properties into device functionalities these materials must be doped; however, the nature of carriers and their conduction mechanism at the atomic scale remain unclear. Recent angle-resolved photoelectron spectroscopy investigations provided insight into these questions, revealing that the carriers of prototypical metal oxides undergo a transition from a polaronic liquid to a Fermi liquid regime with increasing doping. Here, by performing ab initio many-body calculations of angle-resolved photoemission spectra of titanium dioxide, we show that this transition originates from non-adiabat

SUBMITTER: Verdi C 

PROVIDER: S-EPMC5472750 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature