1. Hylleraas Centre for Quantum Molecular Sciences, UiT The Arctic University of Norway, Tromsø 9037, Norway
2. Department of Chemistry, UiT The Arctic University of Norway, Tromsø 9037, Norway
3. Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
4. Department of Physics, University of Latvia, Jelgavas iela 3, Riga, Latvia 1004, Latvia