1. Computer Electrical and Mathematical Science and Engineering; King Abdullah University of Science and Technology; Thuwal 23955 Saudi Arabia
2. Erich Schmid Institute of Materials Science; Austrian Academy of Sciences; Jahnstrasse 12 A-8700, Leoben Austria
3. School of Natural Sciences; Far Eastern Federal University; 690950, Vladivostok Russia
4. Institut für Physik; Johannes Gutenberg Universität Mainz,; 55128 Mainz Germany
5. Singulus Technologies AG; 63796 Kahl am Main Germany