Hydrogen and oxygen manipulation in complex oxides

摘要

Transition-metal perovskite oxides and their derivatives compose a huge material familyof complex oxides.Strong correlations between different degrees of freedom (charge,spin,orbitals,etc.) often lead to the discoveries of emergent phenomena1-4.Among these interactions,the electron-ion interaction is fairly strong~5,so the ionic manipulation would naturally givedramatic influence on the material properties.Thus,ionic manipulation is currently of greatinterests in materials science with enormous practical applications.Here,I would like to exhibitmy previous works on the electric-field control of oxygen and hydrogen in the model systemof SrCoO_(2.5),and the brief introduction of our joint strategy of manipulating ions in mixed-anionsystems.