1. Department of Materials Science and Engineering Southern University of Science and Technology Shenzhen 518055 P. R. China
2. Department of Physics and Center for Quantum Materials Hong Kong University of Science and Technology Hong Kong P. R. China
3. Center for Infrastructure Engineering Western Sydney University Kingswood New South Wales 2751 Australia
4. Guangdong Provincial Key Laboratory of Energy Materials for Electric Power Southern University of Science and Technology Shenzhen 518055 China