1. Unité de Physico-Chimie et de Physique des Matériaux (PCPM), Université Catholique de Louvain, Place Croix du Sud 1, B-1348 Louvain-La-Neuve, Belgium, Research Center on Microscopic and Nanoscopic Electronic Devices and Materials (CERMIN), Université Catholique de Louvain, B-1348 Louvain-La−Neuve, Belgium, Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, and Advanced Materials Department, IPICYT, Av. Venustiano Carranza 2425-A, San Luis Potosí 78210,...