1. Labratory for Nanoelectronics, Department of Information Technology and Electrical Engineering, ETH Zurich, Zurich CH-8092 Switzerland
2. Nano TCAD Group, Department of Information Technology and Electrical Engineering, ETH Zurich, Zurich CH-8092 Switzerland
3. Division of Theoretical Chemistry and Amsterdam Center for Multiscale Modeling (ACMM), Vrije University Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands