| Affiliation: | 1. Max‐Planck‐Institut für Festk?rperforschung, Heisenbergstrasse 1, 70569 Stuttgart (Germany), Fax: (+49)?711‐689‐1662 http://www.fkf.mpg.de/kern;2. Present address: Department of Chemistry, Indiana University (USA);3. Present address: Department of Physics, The Hong Kong University of Science and Technology (China);4. Institut für Nanotechnologie am Forschungszentrum Karlsruhe (Germany);5. Present address: School of Chemistry, University of Hyderabad (India);6. Institute de Physiques des Nanostructures, école Polytechnique Fédérale de Lausanne, 1015 Lausanne (Switzerland) |
