About Charles H. Ahn's Work
Our research group focuses on the physics of complex oxide materials. These materials exhibit a tremendous diversity of behavior, including nearly all the complex phenomena that can be observed in the solid state, such as superconductivity, ferroelectricity, and magnetism. Because of the strong interplay between spin, charge, and lattice degrees of freedom in these materials, an even broader spectrum of possibilities becomes available if one layers and combines different complex oxides together at the atomic scale to create new, artificially structured heterogeneous materials systems. To realize such systems experimentally requires control of materials at the atomic scale, which is now achievable using advanced atomic-scale growth techniques, such as molecular beam epitaxy.