1. Felix Bloch Institute for Solid State Physics Leipzig University Linnéstraße 5 04103 Leipzig Germany
2. Robinson Research Institute Victoria University of Wellington PO Box 33436 Lower Hutt 5046 New Zealand
3. The MacDiarmid Institute for Advanced Materials and Nanotechnology SCPS Victoria University of Wellington PO Box 600 Wellington 6140 New Zealand
4. School of Chemical and Physical Sciences Victoria University of Wellington PO Box 600 Wellington 6140 New Zealand
5. Van der Waals-Zeeman Institute Institute of Physics University of Amsterdam 1098 XH Amsterdam The Netherlands
6. Institute for Mineralogy, Crystallography and Materials Science Faculty of Chemistry and Mineralogy Leipzig University Scharnhorststr. 20 04275 Leipzig Germany