The materials physics of complex oxides
Physics Colloquium
3:30 pm
Jorgensen Hall Room: 136
Speaker: Charles Ahn, Yale University
Department of Applied Physics, Yale University
Complex oxide materials exhibit a tremendous diversity of behavior encompassing a range of functional properties, such as magnetism, ferroelectricity, multiferroicity, and superconductivity. As diverse as this behavior is, an even richer spectrum of possibilities becomes available if one starts to combine different complex oxides together with atomic-scale precision to create new artificially structured, heterogeneous systems. In these nanostructured materials, the atomic-scale interface of these systems can play a decisive role in determining the observed behavior, with new physical properties emerging. In this talk, we describe the electrostatic control of strongly correlated behavior, such as magnetism, the Mott metal-insulator transition, and orbital polarization, and we discuss the interplay between new interfacial structural motifs and functional behavior.
Biography:
Charles Ahn received his B.A. degree from Harvard University and Ph.D. from Standard University. After working as a postdoctoral scholar at the University of Geneva, he joined the Department of Applied Physics at Yale University in 2000. He is currently the department chair and William K. Lanman Jr. Professor of Applied Physics, and the director of Yale MRSEC. Prof. Ahn is the Fellow of the American Physical Society, and the recipient of the AVS Peter Mark Memorial Award, the David and Lucile Packard Fellowship in Science and Engineering, and the Alfred P. Sloan Fellowship. His research focuses on the fabrication and the study of the physical properties of novel complex oxide materials using advanced growth and characterization techniques, including molecular beam epitaxy, scanning probe microscopy, and synchrotron x-ray scattering techniques.
Department of Applied Physics, Yale University
Complex oxide materials exhibit a tremendous diversity of behavior encompassing a range of functional properties, such as magnetism, ferroelectricity, multiferroicity, and superconductivity. As diverse as this behavior is, an even richer spectrum of possibilities becomes available if one starts to combine different complex oxides together with atomic-scale precision to create new artificially structured, heterogeneous systems. In these nanostructured materials, the atomic-scale interface of these systems can play a decisive role in determining the observed behavior, with new physical properties emerging. In this talk, we describe the electrostatic control of strongly correlated behavior, such as magnetism, the Mott metal-insulator transition, and orbital polarization, and we discuss the interplay between new interfacial structural motifs and functional behavior.
Biography:
Charles Ahn received his B.A. degree from Harvard University and Ph.D. from Standard University. After working as a postdoctoral scholar at the University of Geneva, he joined the Department of Applied Physics at Yale University in 2000. He is currently the department chair and William K. Lanman Jr. Professor of Applied Physics, and the director of Yale MRSEC. Prof. Ahn is the Fellow of the American Physical Society, and the recipient of the AVS Peter Mark Memorial Award, the David and Lucile Packard Fellowship in Science and Engineering, and the Alfred P. Sloan Fellowship. His research focuses on the fabrication and the study of the physical properties of novel complex oxide materials using advanced growth and characterization techniques, including molecular beam epitaxy, scanning probe microscopy, and synchrotron x-ray scattering techniques.