1. Department of Materials Science and Engineering; The Pennsylvania State University; University Park PA 16802 USA
2. Department of Chemistry; Department of Physics and Department of Biochemistry and Molecular Biology; The Pennsylvania State University; University Park PA 16802 USA
3. Department of Material Chemistry; Kyoto University; Nishikyo Kyoto 615-8510 Japan
4. Quantum Condensed Matter Division; Oak Ridge National Laboratory; 1, Bethel Valley Road Oak Ridge TN 37831 USA
5. Department of Materials Science and Engineering; Kyoto University; Sakyo Kyoto 606-8501 Japan