1. Department of Physics, Albanova University Center, Stockholm University, 10691 Stockholm, Sweden
2. GPQIT, Departamento de Química, ICEx, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil
3. SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States