The synthesis and electrical transport of ligand-protected Au13 clusters Zhongxia Wei, Wanrun Jiang, Zhanbin Bai, Zhen Lian, Zhigang Wang and Fengqi Song Eur. Phys. J. D, 71 9 (2017) 237 Published online: 12 September 2017 DOI: 10.1140/epjd/e2017-80040-y