1. ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot Oxon, OX11 0QX, United Kingdom
2. Highly Correlated Matter Research Group, Physics Department, University of Johannesburg, PO Box 524, Auckland Park 2006, South Africa
3. Department of Physics, University of Oxford, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, United Kingdom
4. Center for Correlated Matter and Department of Physics, Zhejiang University, Hangzhou 310058, China
5. Department of Physics and State Key Lab of Silicon Materials, Zhejiang University, Hangzhou 310027, China