1. The Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
2. Physics Department, Southern Illinois University Carbondale, Carbondale, Illinois 62901
3. Laboratory of Condensed Matter Physics, University of Picardie Jules Verne, Amiens, 80039, France, and L. D. Landau Institute for Theoretical Physics, Moscow, Russia
4. Materials Science & Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
5. Asylum Research, Santa Barbara, California 93117