Research Interests
Postdoctoral Research Opportunities
Computational Studies of Dielectrics, Ferroelectrics, and other Functional Oxides. Certain oxides, especially those with perovskite or related structures, exhibit remarkable physical properties, such as large dielectric constants, large piezoelectric coefficients, relaxor ferroelectricity, and colossal magnetoresistance. Materials with optimal properties are generally solid solutions, often involving four or more different metal ions. Research opportunities exist in the systematic development of advanced models for the prediction of the above physical properties in such solid solutions....
First-Principle Calculations of Defects in Electronic Materials.Many of the current challenges in integration of new materials into nanoscale electronic devices concern the nature of the defects in these materials. For example, oxygen vacancies in HfO2 (hafnia) are believed to decrease the channel mobility of Si integrated circuit transistor devices, thereby causing threshold voltage instabilities. First-principles (FP) calculations can yield information about defect properties that can potentially provide solutions to such materials problems. ...