Papers by Keyword: Photoemission

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Authors: Hamid Khachab, Yamani Abdelkafi, Abderrahmane Belghachi
Abstract: In situ monitoring of surface processes and understanding of growth processes are important in achieving precise control of crystal growth. Therefore, many surface monitoring techniques are used during crystal growth by molecular beam epitaxy (MBE). The most popular is reflection high-energy electron diffraction (RHEED) and photoemission current which provides information on the morphology during the growing surface. The photoemission oscillation technique has been successfully used in situ to monitor the growth of materials and to control the thickness as well as the roughness of the deposited layer. In this paper, we report results of atomic scale simulations used to study the dynamics of homoepitaxial growth of GaAs(001) β2(2x4) reconstructed surface and, in particular, the RHEED oscillations of the photoemission current.
Authors: Leif I. Johansson, H.I.P. Johansson
Authors: Charíya Virojanadara, M. Hetzel, Leif I. Johansson, Wolfgang J. Choyke, Ulrich Starke
Abstract: The atomic and electronic structure of 4H-SiC(1 1 02) surfaces were investigated using scanning tunneling microscopy (STM), low-energy electron diffraction (LEED) and photoemission (PES). Two well ordered phases existing on this surface, i.e. (2×1) and c(2×2) are discussed. The (2×1) phase consists of a Si adlayer which is topped by an array of ordered Si-nanowires with electronic states confined to one dimension. For the c(2×2) phase STM indicates the presence of adatoms and PES a surface composition close to bulk SiC stoichiometry. A detailed atomic model for this c(2×2) phase is proposed.
Authors: D. van der Putten, D. Olevano, R. Zanoni, H. Krautscheid, D. Fenske
Authors: Nicolas Camara, Edwige Bano, Konstantinos Zekentes
Authors: Richard H. Howell, P.A. Sterne, F. Solal, Michael J. Fluss, J. Tobin, J. O'Brien, H.B. Radousky, H. Haghighi, J.H. Kaiser, S.L. Rayner, R.N. West, J.Z. Liu, R. Shelton, C.G. Olsen, C. Gu, Koichi Kitazawa, Hiroko Kojima
Authors: Wolf-Dieter Schneider, H.-V. Roy, P. Fayet, F. Patthey, Bernard Delley, Carlo Massobrio
Authors: Charíya Virojanadara, Leif I. Johansson
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