1. Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
2. Korea Institute for Advanced Study, 85 Hoegiro, Seoul 02455, Republic of Korea
3. Departamento de Física Aplicada I, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos s/n, E-29071 Málaga, Spain
4. Applied Theoretical Physics−Computational Physics, Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder Strasse 3, D-79104 Freiburg, Germany
5. Research Group for Simulations of Energy Materials, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, D-14109 Berlin, Germany