First I want to thank Prof. Siegfried Selberherr who provided me his full support, that made it finally possible to finish this thesis. Also I thank Prof. Selberherr for the working environment that surrounded me and the possibility to participate in international conferences which enriched this research.
I would like to thank Prof. Erasmus Langer, the head of the Institute for Microelectronics, for taking care of all the bureaucracy and providing me with the support letters for different visas and also to receive a travel grant for the 227th ECS meeting.
My deepest gratitude goes to my advisor, Privatdoz. Viktor Sverdlov. He introduced spin physics to me, strained silicon, the k ⋅ p method, and the spin drift-diffusion model. He helped me to improve my quality of writing for the conference proceedings and the scientific journals. I also thank Professor Marc Bescond for serving on my examination committee.
I am indebted to Dr. Thomas Windbacher for his consistent guidance on my research during the last couple of years, the German translation of the abstract, and the careful proofreading of the thesis. He has been always willing to provide his feedback whenever I needed. I would like to deeply thank Dr. Dmitry Osintsev for his help regarding the computational parts of the momentum relaxation time and the spin lifetime in silicon.
During my work at the institute I had the pleasure to collaborate on different levels with many other colleagues I have a high regard for: Dr. Markus Bina, Dr. Josef Weinbub, and Dr. Karl Rupp. They have helped me to improve my understanding regarding SGFramework, ViennaGrid, and ViennaSHE. Dr. Josef Weinbub also helped me using the Vienna Scientific Cluster.
I would like to mention my wonderful time in Vienna during my stay, taking part in sports, cultural events, and meeting many wonderful persons besides my Phd work. Finally, but not the least, I want to thank my parents Mr. Indra Nath Ghosh and Mrs. Shyamali Ghosh and my elder sister Joyeeta for the endless support and faith in me. My gratitude to them is hard to describe by words.
This work was supported by the European research Council through the grant #247056 MOSILSPIN. The computational results were achieved in part using the Vienna Scientific Cluster (VSC).