IRG II: Double Perovskite Interfaces and Heterostructures @ Ohio State University
The IRG-2 interdisciplinary research team focuses on the synthesis, characterization, and modeling of double perovskite thin films and heterostructures. A wide range of phenomena are found in double perovskites, ranging from ferroelectricity to superconductivity to half-metallicity, and many more. In perovskite heterostructures the properties of individual layers can be varied dramatically while maintaining common structural framework.While scientists have been uncovering exciting phenomena in bulk perovskites for decades, it is only in recent years that perovskite thin films and heterostructures have been investigated in earnest. Perovskite heterostructures are of particular interest because the properties of individual layers can be varied dramatically while the common structural framework enables one to maintain epitaxial registry between layers. The A2BB_O6 double perovskites are an intriguing, yet relatively unexplored, class of complex oxides. Compared to simpler ABO3 ternary perovskites, the presence of the chemical order of B and B_ cations profoundly impacts both the electronic structure and the magnetic coupling. Of particular interest are double perovskites that exhibit half-metallic ferrimagnetism. The combination of half-metallic transport and high Curie temperature (TC up to 725 K) make them ideal for use in spin electronic devices. Our team possesses expertise spanning condensed matter theory, solid state chemistry, and advanced thin film growth and characterization. This knowledge is brought to bear on the challenge of harnessing the potential of half-metallic double perovskites.
IRG-2 Faculty
- Leonard J. Brillson, Professor and CRM Scholar, Department of Electrical & Computer Engineering (Co-leader)
Patrick M. Woodward, Professor, Department of Chemistry (Co-leader)
Hamish L. Fraser, Professor and Ohio Regents Eminent Scholar, Department of Materials Science and Engineering
Thomas R. Lemberger, Professor, Department of Physics
Patricia A. Morris, Associate Professor, Department of Materials Science and Engineering
Mohit Randeria, Professor, Department of Physics
Nandini Trivedi, Professor, Department of Physics
Wofgang Windl, Associate Professor, Department of Materials Science and Engineering
Fengyuan Yang, Assistant Professor, Department of Physics
