TY - GEN A1 - Taoka, Noriyuki A1 - Capellini, Giovanni A1 - Driesch, Nils von den A1 - Buca, Dan A1 - Zaumseil, Peter A1 - Schubert, Markus Andreas A1 - Klesse, Wolfgang Matthias A1 - Montanari, Michele A1 - Schröder, Thomas T1 - Sn Migration Control at High Temperature Due to High Deposition Speed for Forming High Quality GeSn Layer T2 - Applied Physics Express Y1 - 2016 U6 - https://doi.org/10.7567/APEX.9.031201 SN - 1882-0786 SN - 1882-0778 VL - 9 IS - 3 SP - 031201 ER - TY - GEN A1 - Ewert, Moritz A1 - Schmidt, Thomas A1 - Flege, Jan Ingo A1 - Heidmann, Inga A1 - Grzela, Tomasz A1 - Klesse, Wolfgang Matthias A1 - Förster, M. A1 - Aballe, Lucia A1 - Schröder, Thomas T1 - Morphology and Chemical Composition of Co Germanide islands on Ge(001): in-situ nanoscale insights into contact formation for Ge-based device technology T2 - Nanotechnology Y1 - 2016 SN - 1361-6528 SN - 0957-4484 VL - 27 IS - 32 SP - 325705 ER - TY - GEN A1 - Schlykow, Viktoria A1 - Klesse, Wolfgang Matthias A1 - Niu, Gang A1 - Taoka, Noriyuki A1 - Yamamoto, Yuji A1 - Skibitzki, Oliver A1 - Barget, M. R. A1 - Zaumseil, Peter A1 - Känel, Hans von A1 - Schubert, Markus Andreas A1 - Capellini, Giovanni A1 - Schroeder, Thomas T1 - Selective growth of fully relaxed GeSn nano-islands by nanoheteroepitaxy on patterned Si(001) T2 - Applied Physics Letters Y1 - 2016 U6 - https://doi.org/10.1063/1.4967500 SN - 1077-3118 VL - 109 IS - 20 SP - 202102 ER - TY - GEN A1 - Noatschk, Katharina A1 - Hofmann, E. V. S. A1 - Dabrowski, J. A1 - Curson, N. J. A1 - Schröder, Thomas A1 - Klesse, Wolfgang Matthias A1 - Seibold, Götz T1 - Ge(001) surface reconstruction with Sn impurities T2 - Surface Science N2 - Defects play an important role for surface reconstructions and therefore also influence the substrate growth. In this work we present a first principle calculation for the Ge(001) surface without and with tin impurities incorporated into the top surface layer. By mapping the system onto an Ising-type model, with interaction constants taken from density functional theory, the stability of the surface reconstructions under the influence of different concentrations of tin impurities is explored. This approach allows us to simulate the possible phase transitions for the different surface reconstructions including the local structure around the tin impurity atoms. In addition, we compare our theoretical results with experimental STM images on clean and Sn-doped Ge(100) surfaces. KW - Gesn KW - DFT KW - Monte carlo simulations KW - Surface reconstruction KW - Impurities Y1 - 2021 UR - https://www.sciencedirect.com/science/article/pii/S0039602821001163?dgcid=author U6 - https://doi.org/10.1016/j.susc.2021.121912 VL - 713 SP - 1 EP - 8 ER -