Friday, January 20, 2006, 11:00 am — Hamilton Seminar Room, Bldg. 555
Two exciting developments in the field of semiconductor science are the emergence of nano-materials and of spintronic materials. In nano-materials, size is used as a means of modifying systematically the electronic and optical properties of the material. In spintronic materials, addition of magnetic impurities can result in materials that are semiconducting and ferromagnetic at the same time.
Here, I will present ab initio calculations for both classes of materials, based on density functional theory, that elucidate the mechanisms controlling size-induced and magnetic-impurity-induced changes in electronic structure. I will then show how these explain novel electrical, magnetic, and optical properties of these materials that have been observed experimentally. Finally, I will show how by modifying both size and impurity content we can predict unusual properties for “nano-spintronic” materials.
2657 | INT/EXT | Events Calendar