Image Gallery SFB 616


	SFB616 Image Gallery Click to enlarge picture or video. © All pictures under the copyright of the SFB616. If you want to use a picture without watermark, please contact us. Pictures Titel: SPA-LEED pattern of 3 ML Ge on Si(111) with Sb as surfactant. Formation of a honeycomb-like strain induced reconstruction. Authors: M. Kammler, M. Horn von Hoegen Publication: Appl. Phys. Lett. 85, 3056-3058 (2004) High Resolution Titel: Damage of a Ag contact pattern after severe electromigration effects. Authors: B. Stahlmecke, G. Dumpich Publication: J. Phys.: Condens. Matter 19, 046210 (2007) Appl. Phys. Lett. 88, 053122 (2006) High Resolution Titel: STM image of a mixture of Au and Ag induced (√3x√3)- and (√21x√21)- reconstructions on Si(111) in two rotational domains. The blue is a domain boundary Authors: C. Wiethoff, C. Seifert, M. Horn von Hoegen Publication: Unpublished High Resolution Titel: Two photon photoelectron emission microscopy image of a surface plasmon polariton beating pattern on nanoscale Ag islands on a Si(111) sample. The plasmons move with half of the speed of light. Authors: F.-J. Meyer zu Heringdorf, M. Horn von Hoegen Publication: Surf. Sci. 601, 4700-4705 (2007) High Resolution Titel: Visualization of the kinetic excitation within an atomic collision cascade 450 fs after the impact of a 5-keV silver atom onto an Ag(111) model crystal. Authors: A. Duvenbeck, O. Weingart, V. Buss and A. Wucher Publication: New J. Phys. 9, 38 (2007) High Resolution Titel: Combined ballistic electron transmission and topological STM image of a C₆₀ island (blue) on a Bi(111)/Si(100) substrate. The thermal color scale corresponds to the transmission probability of ballistic electrons. Authors: A. Bannani, C. Bobisch, R. Möller Publication: Science 30, 1824 - 1828 (2007) High Resolution Titel: Epitaxial grown Ag island on a Si(111) surface. The triangular shape is typical for the self-organized, single-crystalline Ag(111) island. The SFB 616 logo was milled into the island by focused ion beam (FIB). The Picture was taken with the scanning electron microscope (SEM) of the DualBeam FIB, by which the milling process can be controlled in-situ. Authors: S. Sindermann, M. Horn-von Hoegen, F.-J. Meyer zu Heringdorf Publication: unpublished High Resolution Titel: SEM image of the SFB 616 logo milled in an epitaxial grown Ag island by FIB. The sample was tilted to 52° to show the three-dimensional structure of the Ag island. Authors: S. Sindermann, M. Horn-von Hoegen, F.-J. Meyer zu Heringdorf Publication: unpublished High Resolution Titel: LEEM image of an epitaxial Ag island on Si(111). In mirror electron microscopy, where electrons have such a low energy that they are reflected just before they hit the sample, atomic steps on top of the island an on the substrate are visible. The slightly curved atomic steps on top of the island (dark lines) form a shape that resembles the duck of the famous german childrens TV-Show “Die Sendung mit der Maus” (“the program with the mouse”). As the “duck” has a size of about 5000 nm and is a relief of a depth of less than 1 nm, we refer to it as “Nano-Duck”. Authors: P. Kahl, M. Horn-von Hoegen, F.-J. Meyer zu Heringdorf Publication: unpublished Titel: Look inside an UHV chamber, which inhibits a variable-temperature AFM(7500 UHV by RHK). The advantages of its beetle-type design include the relatively compact size and thus small mechanical loop, intrinsic symmetry that reduces effects of thermal drift, and the convenient incorporation of reliable fine and coarse tip approaches and microscope positioning. Titel: This picture shows solid silver after the bombardment with a four-atomic cluster at different times after the impact. In addition, the colored clouds indicate the electron temperatures obtained by the calculation of the excitation energy transport with respect to the momentary shape of the surface (black line in pictures above). Authors: Boris Weidtmann Publication: unpublished High Resolution Titel: Anisotropic scattering of surface state electrons at a point defect on Bi(111) Pseudo 3 dimensional representation of a dI/dV image. The colour scale corresponds to the local density of states. Electrons in the surface state of Bi(111) are scattered at an adsorbate. Using scanning tunnelling microscopy and lock-in technique the scattering is visualized by a standing wave pattern in the dI/dV imaging near the adsorbate. Image parameters: 24 x 24 nm², tunnelling current: 110A, tunnelling voltage: -1mV Authors: M.C. Cottin, C.A. Bobisch, J. Schaffert, G. Jnawali, A. Sonntag, G. Bihlmayer and R. Möller Publication: Appl. Phys. Lett. 98, 022108 (2011) High Resolution Titel: Topographic empty states STM image of a molecular mixed monolayer Pseudo 3 dimensional representation in false colour scale. The organic dye molecules PTCDA (pink) and CuPc (green) self assemble on a Cu(111) surface if the right amount of molecules is exposed onto the surface. Both molecules are found to aggregate in a superstructure whose unit cell is composed of two PTCDA molecules and one CuPc molecule. Image parameters: 10 x 12 nm², tunnelling current: 2.6pA, tunnelling voltage: 2.1V Authors: C.A. Bobisch, M.C. Cottin, J. Schaffert, A. Bannani and R. Möller Publication: unpublished Publication: unpublished High Resolution Videos Titel: Visualization of the kinetic excitation within an atomic collision cascade 450 fs after the impact of a 5-keV silver atom onto an Ag(111) model crystal. Authors: A. Duvenbeck, O. Weingart, V. Buss and A. Wucher Publication: New J. Phys. 9, 38 (2007)