1. Inspur Group, State Key Laboratory of High-End Server & Storage Technology, Jinan, Shangdong, P. R. China
2. Institut Charles Gerhardt Montpellier, CNRS UMR 5253, ENSCM, 8 rue de l’Ecole Normale,
34296 Montpellier Cedex 05, France
3. Centre Interdisciplinaire de
Nanoscience de Marseille, Aix-Marseille Université, UPR 3118 CNRS, Campus de Luminy − case 913,
13288 Marseille Cedex 9, France