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Publications


2013


  • Cell-imprinted substrates direct the fate of stem cells.    Morteza Mahmoudi, Shahin Bonakdar, Mohammad A. Shokrgozar, Haniyeh Aghaverdi, Raimo Hartmann*, Andre Pick*, Gregor Witte*, and Wolfgang Parak*
   ACS Nano, Just accepted manuscript / DOI: 10.1021/nn403844q (2013)
   Abstract
  • Diffusion-controlled growth of molecular hetero-structures: fabrication of 2D, 1D and 0-Dimensional C60-nanostructures on pentacence substrates.
   Tobias Breuer and Gregor Witte
   ACS Applied Materials & Interfaces 5, 9740 - 9745 (2013)
   Abstract
  • Thermally activated intermixture in pentacene-perfluoropentacene heterostructures
    Tobias Breuer and Gregor Witte
    J. Chem. Phys. 138, 114901 (2013)
    Abstract
  • Synthesis and solid-state structures of 6,13-Bis(trifluoromethyl)- and 6,13-Dialkoxypentacene
    Jonas Schwaben, Niels Münster, Tobias Breuer, Michael Klues, Klaus Harms, Gregor Witte, and Ulrich Koert
    European Journal of Organic Chemistry, 1639 - 1643 (2013)
    Abstract

2012


  • Epitaxial growth of pi-stacked perfluoropentacene on graphene-coated quartz. Ingo Salzmann, Armin Moser, Martin Oehzelt, Tobias Breuer, Xinliang Feng, Zhen-Yu Juang, Dmitrii Nabok, Raffaele G. Della Valle, Steffen Duhm, Georg Heimel, Aldo Brillante, Elisabetta Venuti, Ivano Bilotti, Christos Christodoulou, Johannes Frisch, Peter Puschnig, Claudia Draxl, Gregor Witte, Klaus Müllen, and Norbert Koch
    ASC Nano, 12, 10874-10883 (2012)
    Abstract
  • Structural and optical properties of pentacene films grown on differently oriented ZnO surfaces
    M. El Helou, E. Lietke, J. Helzel, W. Heimbrodt, and Gregor Witte
    Journal of Physics: Condensed Matter, 24, 445012 (2012)
    Abstract
  • Substrate induced thermal decomposition of perfluoro-pentacene thin films on the coinage metals
    Christian Schmidt, Tobias Breuer, Stefan Wippermann, Wolf Gero Schmidt, and Gregor Witte
    Journal of Physical Chemistry C, 116, 24098 - 24106 (2012)
    Abstract

  • Rapid preparation of highly ordered ultraflat ZnO surfaces
    Jan Götzen and Gregor Witte
    Applied Surface Science, 258, 10144 - 10147 (2012)
    Abstract
  • Vibrational Davydov-Splittings and Collective Mode Polarizations in Oriented Organic Semiconductor Crystals
    Tobias Breuer, Mehmet Ali Celik, Peter Jakob, Ralf Tonner, and Gregor Witte
    Journal of Physical Chemistry C, 116, 14491 - 14503 (2012)
    Abstract
  • GaP heteroepitaxy on Si(001): Correlation of Si-surface structure, GaP growth conditions, and Si-III/V interface structure
    A. Beyer, J. Ohlmann, S. Liebich, H. Heim,  G. Witte, W. Stolz, and K. Volz
    Journal of Applied Physics 111, 083534 (2012)
    Abstract
  • Temperature Dependent Structural Phase Transition at the Perfluoropentacene/Ag(111) Interface
    Manuel Marks , Christian Schmidt , Christian H. Schwalb , Tobias Breuer , Gregor Witte and Ulrich Höfer
    Journal of Physical Chemistry C 116, 1904 (2012)
    Abstract
  • Vinyl-functionalized gold nanoparticles as artificial monomers for the copolymerization with methyl methacrylate
    Katharina Gries, Mira El Helou, Gregor Witte, Seema Agarwal, Andreas Greiner
    Polymer 53, 1632 - 1639 (2012)
    Abstract    


2011


  • Immobilization of quantum dots via conjugated self-assembled monolayers and their application as a light-controlled sensor for the detection of hydrogen peroxide
    W. Khalid, M. El Helou, T. Murböck, Z. Yue, J.-M. Montenegro, K. Schubert, G. Göbel, F. Lisdat, G. Witte and
    W. J. Parak
    ACS Nano 5 (12), 9870 (2011)
    Abstract
  • Temperature dependent Optical Properties of Pentacene films on Zinc Oxide
    Jonatan Helzel, Stephanie Jankowski, Mira El Helou, Gregor Witte, Wolfram Heimbrodt
    Applied Physics Letters 99, 211102 (2011)
    Abstract
  • Interrelation between substrate roughness and thin-film structure of functionalized acenes on graphite
    Tobias Breuer,  Ingo Salzmann, Jan Götzen, Martin Oehzelt, Antonia Morherr, Norbert Koch, Gregor Witte
    Crystal Growth & Design 11, 4996 (2011)
    Abstract
  • Application of Transmission Electron Microscopy for Microstructural Characterization of Perfluoropentacene Thin Films
    Benedikt Haas, Andreas Beyer, Wiebke Witte, Tobias Breuer, Gregor Witte, Kerstin Volz
    Journal of Applied Physics 110, 073514 (2011)
    Abstract
  • Tailoring the Cu(100) work function by substituted benzenethiolate-SAMs
    Christian Schmidt, Alexander Witt, Gregor Witte
    Journal of Physical Chemistry A, 115 (25), 7234-7241 (2011)
    Abstract
  • Epitaxial growth of perfluoropentacene films with predefined molecular orientation: A route for single-crystal optical studies
    Tobias Breuer, Gregor Witte
    Physical Review B 83 (15), 155428 (2011)
    Abstract
  • Temporal Evolution of Benzenethiolate-SAMs on Cu(100)
    Christian Schmidt, Jan Götzen, Gregor Witte
    Langmuir 27 (3), 1025-1032 (2011)
    Abstract
  • Structural Evolution of Perfluoro-Pentacene Films on Ag(111): Transition from 2D to 3D Growth
    Jan Götzen, Christian H. Schwalb, Christian Schmidt, Gerson Mette, Manuel Marks, Ulrich Höfer, Gregor Witte
    Langmuir 27 (3), 993-999 (2011)
    Abstract

  • Absence of template induced ordering in organic multilayers: the growth of pentacene on a Cu(221) vicinal surface
    Jan Götzen, Simon Lukas, Alexander Birkner, Gregor Witte
    Surface Science 605, 577-581, (2011)
    Abstract

2010


  • Simultaneously Understanding the Geometric and Electronic Structure of Anthraceneselenolate on Au(111): A Combined Theoretical and Experimental Study
    Anna M. Track, Ferdinand Rissner, Georg Heimel, Lorenz Romaner, Daniel Käfer, Asif Bashir, Gerold M. Rangger, Oliver T. Hofmann, Tomaš Bucko, Gregor Witte, and Egbert Zojer
    Journal of Physical Chemistry C 114, No. 6, 2677 (2010)
    Abstract

  • Evidence for Band-like Transport in Graphene-based Organic Monolayers
    D. Käfer, A. Bashir, X. Dou, G. Witte, K. Müllen and Ch. Wöll
    Adv. Mat 21,  Issue 3, 384 (2010)
    Abstract

  • Influence of OH groups on charge transport across organic-organic interfaces: a systematic approach employing an "ideal" device
    Zhi-Hong Wang, Daniel Käfer, Asif Bashir, Jan Götzen, Alexander Birkner, Gregor Witte and Christof Wöll
    Physical Chemistry Chemical Physics 12, 4317 (2010)
    Abstract

  • Growth and Structure of Pentacene Films on Graphite: Weak Adhesion as a Key for Epitaxial Film Growth
    Jan Götzen, Daniel Käfer, Christof Wöll and Gregor Witte
    Physical Review B. 81, 085440 (2010)
    Abstract

  • Rubrene Microcrystals: A Route to Investigate Surface Morphology and
    Bulk Anisotropies of Organic Semiconductors

    Mira El Helou, Olaf Medenbach and Gregor Witte
    Crystal Growth & Design, 10, 3496 (2010)
    Abstract

2009

 

  • Thermally activated dewetting of organic thin films: the case of pentacene on SiO2 and gold
    D. Käfer, C. Wöll, G. Witte
    Appl. Phys. A 95, 273 (2009)
    Abstract

  • Molecular mechanisms of electron-induced cross-linking in aromatic SAMs
    A. Turchanin*, D. Käfer, M. El-Desawy, Ch. Wöll, G. Witte*, A. Gölzhäuser,
    Langmuir 25 (13), 7342-7352 (2009)
    Abstract

  • A microwave discharge source operating at pressures of several atmospheres
    V.M. Akimov, G. Witte, L.I. Kolesnikova, L.Y. Rusin, J.P. Toennies
    Instrum. and Exp. Techn. 52 (3), 394 (2009)
    Abstract

2008



  • Resolving the Depth Coordinate in Photoelectron Spectroscopy -  Comparison of Excitation Energy Variation vs.  Angular Resolved XPS for the Analysis of a Self-assembled Monolayer Model System
    S.V. Merzlikin, N.N. Tolkachev,  Th. Strunskus, G. Witte, Th. Glogowski, Ch.Wöll, and W. Grünert,
    Surf. Sci. 602, 755 (2008).
    Abstract

  • Influence of contact metals on the performance and morphology of pentacene bottom-contact field-effect transistors
    C. Bock, D.V. Pham, U. Kunze, D. Käfer, G. Witte, Ch. Wöll,
    Physica E  40, 2107 (2008).
    Abstract

  • Deposition and characterization of thin organic films on metals for applications in organic electronics
    G. Witte and Ch. Wöll,
    phys. stat. sol. (a) 205, 497 (2008)
    Abstract

  • Work function Changes Induced by Charged Adsorbates:  Origin of the Polarity Asymmetry
    P. Bagus, D. Käfer, G. Witte, Ch. Wöll,
    Phys. Rev. Lett. 100, 126101 (2008).
    Abstract

  • Selenium as a Key Element for Highly Ordered Aromatic Self-Assembled Monolayers
    Asif Bashir, Daniel Käfer, Jan Müller, Christof Wöll, Andreas Terfort, and Gregor Witte*,
    Angewandte Chemie Int. Ed. 47, 5250 (2008).
    Abstract

  • Selen als Schlüsselkomponente für hochgeordnete aromatische selbstorganisierte Monoschichten
    Asif Bashir, Daniel Käfer, Jan Müller, Christof Wöll, Andreas Terfort, and Gregor Witte*,
    Angewandte Chemie 120, 5328 (2008).
    Abstract

  • Packing of planar organic molecules: interplay of van-der-Waals and electrostatic interaction
    Daniel Käfer, Mira El Helou, Christian Gemel, and Gregor Witte*,
    Crystal Growth & Design, 8, 3053 (2008).
    Abstract

  • Reply to a comment of J. Zemek, Prague, regarding the paper ‘‘resolving the depth coordinate in  photoelectron spectroscopy – comparison of excitation energy variation vs. angular-resolved XPS for the analysis of a self-assembled monolayer model system”
    S.V. Merzlikin, N.N. Tolkachev, T. Strunskus, G. Witte, T. Glogowski, C. Wöll, W. Grünert,
    Surf. Sci. 602, 23, 3634 (2008).
    Abstract

2007


  • Growth of Pentacene on Clean and Modified Gold Surfaces
    D. Käfer, L. Ruppel, and G. Witte*,
    Phys. Rev. B  75, 085309 (2007).  
    Abstract

  • Energy-dispersive X-ray reflectivity and GID for Real-time Growth Studies of Pentacene Films
    S. Kowarika, A. Gerlach, W. Leitenberger, J. Hua, G. Witte, C. Wöll, U. Pietsch, F. Schreiber,
    Thin Solid Films, 515 (14), 5606 (2007).
    Abstract

  • Reduced Sheet Resistance In Pentacene Field-Effect Transistors Using Thiol-Modified Electrodes
    D.V. Pham, Y. Gravenstein, C. Bock, U. Kunze, D. Käfer, G. Witte, and Ch. Wöll,
    AIP Conference Proceedings, Vol. 893 Issue 1, 363 (2007).
    Abstract

  • Interplay of Anchoring and Ordering in aromatic Self-Assembled
    D. Käfer, A. Bashir and G. Witte*,
    J. Phys. Chem. C  111 (28), 10546 (2007).
    Abstract

  • Evolution of Pentacene Films on Ag(111): growth beyond the first monolayer
    D. Käfer and G. Witte*,
    Chem. Phys. Lett.  442 (4-6), 376 (2007).
    Abstract

  • Molecules coining patterns into a metal: the hard core of soft matter
    G. Witte*, K. Hänel, C. Busse, A. Birkner, and  Ch. Wöll,
    Chem. Mater.  19, 4228 (2007).
    Abstract

  • Influence of anthracene-2-thiol treatment on the device parameters of pentacene bottom-contact transistors
    C. Bock, D.V. Pham, U. Kunze, D. Käfer, G. Witte, A. Terfort,
    Appl. Phys. Lett.    91, 052110 (2007).
    Abstract

  • Defect-free pentacene diode with a tunnelling contact: n-conduction for positively biased substrate
    L. Ruppel, A. Birkner, G. Witte, C. Busse, T. Lindner,  G. Paasch, Ch. Wöll,
    J. Appl. Phys. 102, 033708 (2007).
    Abstract

  • Structure-Property Relationships in Self-Assembled Monolayers of Thiols: A Study on Phase Transition
    P. Cyganik, M. Buck, Th. Strunskus, A. Shaporenko, G. Witte, M.N. Zharnikov, Ch. Wöll,
    J. Phys. Chem. C  111, 16909 (2007).
    Abstract

2006


  • Growth and morphology of thin films of aromatic molecules on metals: the case of perylene
    G. Witte*, K. Hänel, S. Söhnchen, Ch. Wöll  (invited Paper),
    Appl. Phys. A 82, 447 (2006).
    Abstract

  • Self-Assembled Monolayers of Anthracenethiol on Gold: Preparation, Structure and Stability
    D. Käfer, G. Witte*, P. Cyganik, A. Terfort, and Ch.Wöll,
    J. Am. Chem. Soc. 128, 1723  (2006).  
    Abstract

  • Improved morphology and charge carrier injection in pentacene field-effect transistors with thiol treated electrodes
    C. Bock, D.V. Pham, U. Kunze, D. Käfer, G. Witte*, and  Ch. Wöll,
    J. Appl. Phys. 100, 114517 (2006).
    Abstract

2005


  • Metal-organic Chemical Vapor Deposition (MOCVD) of Palladium: Spectroscopic Study of Cyclopentadienyl-allyl-palladium Deposition on A Palladium Substrate
    A. Niklewski, T. Strunskus, G. Witte and Ch. Wöll,
    Chem. Mater. 17, 861 (2005).
    Abstract

  • Growth of crystalline Rubrene films with enhanced stability
    D. Käfer and G. Witte*,
    Phys. Chem. Chem. Phys. 7(15), 2850 (2005).
    Abstract

  • Deposition of palladium from cyclopentadienyl-allyl-palladium precurser on differently pretreated Sibased substrates: The role of surface Si-OH and Si-H species studied by x-ray photoelectron spectroscopy
    Q.-H. Wu, M. Gunia, T. Strunskus, G. Witte, M. Muhler, Ch. Wöll,
    Chem. Vap. Deposition 11(8-9), 355 (2005).
    Abstract

  • Molecular beam deposition of perylene on copper: formation of ordered phases
    S. Söhnchen, K. Hänel, A. Birkner, G. Witte* and Ch. Wöll,
    Chem. Mater. 17(21), 5297 (2005).
    Abstract

  • The role of molecular conformations in thin film growth: Why soft matter can be special
    D. Käfer, L. Ruppel, G. Witte and Ch. Wöll,
    Phys. Rev. Lett. 95, 166602 (2005).
    Abstract

  • Vacuum level alignment at organic/metal junctions: The “cushion” effect and the interface dipole
    G. Witte, S. Lukas, P. Bagus, and Ch. Wöll,
    Appl. Phys. Lett. 87, 263502 (2005). 
    Abstract

2004


  • Structural and electronic properties of pentacene molecule and molecular pentacene solid
    R.G.Endres, C.Y. Fong, L.H. Yang, G. Witte, and Ch. Wöll,
    Computational Materials Science,  29, 362 (2004).
    Abstract

  • Epitaxial growth of Pentacene films on metal surfaces
    S. Lukas, S. Söhnchen, G. Witte, and Ch. Wöll,
    ChemPhysChem 5, 266 (2004).
    Abstract

  • Epitaxial growth of Pentacene films on Cu(110)
    S. Söhnchen, S. Lukas and G. Witte*,
    J. Chem. Phys. 121, 525  (2004).
    Abstract

  • Organic molecular beam epitaxy of perylene on Cu(110): Results from NEXAFS, XPS and AFM.
    K. Hänel, S. Söhnchen, S. Lukas, G. Beernink, A. Birkner, T. Strunskus, G. Witte and Ch. Wöll,
    J. Mater. Res. 19, 2049 (2004).
    Abstract

  • Growth of aromatic molecules on solid substrates for applications in organic electronics
    G. Witte and Ch. Wöll (Review),
    J. Mater. Res. 19, 1889 (2004).
    Abstract

  • Probing metallization transitions by metastable He-atom scattering
    G. Witte,
    J. Phys: Condens. Matter  16, S2937 (2004).
    Abstract

  • The importance of dewetting in organic molecular beam deposition: pentacene on gold
    G. Beernink, T. Strunskus, G. Witte* and Ch. Wöll,
    Appl. Phys. Lett. 85, 398 (2004).
    Abstract

2003


  • Organic Surface Science: Creating order and complexity using self-assembly
    G. Witte* and Ch. Wöll,
    Phase Transitions, 76(4), 291-305 (2003).
    Abstract

  • Self-assembled monolayers of biphenyl-substituted alkanethiols: odd-even differences in the molecular arrangement and packing density.
    W. Azzam, P. Cyganik, G. Witte, M. Buck and Ch. Wöll,
    Langmuir , 19(20),  8262  (2003).
    Abstract

2002


  • Novel mechanism for molecular self-assembly on metal substrates: Unidirectional rows of pentacene on Cu(110) produced by a substrate-mediated repulsion
    S. Lukas, G. Witte, and Ch. Wöll,
    Phys. Rev. Lett. 88, 28301 (2002).
    Abstract

  • Low frequency vibrational modes of adsorbates
    Gregor Witte,
    Surf. Sci. 502/503, 405 (2002).
    Abstract

  • Microstructure of the Al2O3(11-20) surface .
    T. Becker, A. Birkner, G. Witte* and Ch. Wöll,
    Phys. Rev. B 65, 115401 (2002).
    Abstract

  • Adsorption of dodecanethiol on Cu(110): structural ordering upon thiolate formation
    A. Kühnle, S. Vollmer, T.R. Linderoth, G. Witte*, Ch. Wöll and F. Besenbacher,
    Langmuir  18,  5558  (2002).
    Abstract

  • Structural, chemical, and magnetic properties of Fe films grown on InAs(100)
    L. Ruppel, G. Witte*, Ch. Wöll, T. Last, S.F. Fischer and U. Kunze,
    Phys. Rev. B 66, 245307  (2002).
    Abstract

2001


  • Growth and dynamics of ultrathin Barium films on Cu(100),
    S. Bartholmei, P. Fouquet and G. Witte*,
    Surf. Sci. 473, 227 (2001).
    Abstract

  • Chemisorption of Acenes on flat and vicinal Cu(111) surfaces: step induced alignment,
    S .Lukas, S. Vollmer, G. Witte* and Ch. Wöll,
    J. Chem. Phys. 114, 10123 (2001).
    Abstract

  • Structural characerization of organothiolate adlayers on gold: the case
    of rigid, aromatic backbones,

    Claus Fuxen, Waleed Azzam, Ralf Arnold, Gregor Witte, Andreas Terfort, Christof Wöll,
    Langmuir 17, 3689 (2001).
    Abstract

  • Low Energy Dynamics of NO and CO chemisorbed on Rh(111),
    Gregor Witte,
    J. Chem. Phys. 115, 2757 (2001).
    Abstract

  • Metallization and demetallization of clean and oxygen covered ultrathin alkali metal films on GaAs(100) 
    P. Fouquet and G. Witte,
    Appl. Surf. Sci. 180, 286 (2001).
    Abstract

  • Structural analysis of saturated alkanethiolate monolayers on Cu(100): coexistence of thiolate and sulfide species
    Stefan Vollmer, Gregor Witte and Christof Wöll,
    Langmuir 17, 7560 (2001).
    Abstract

  • Determination of site specific adsorption energies of CO on copper
    Stefan Vollmer, Gregor Witte* and Christof Wöll,
    Catal. Lett. 77 (1-3), 97 (2001).
    Abstract


2000


  • Monitoring of Electronic Poisoning of Ultrathin Alkali Metal Films by Oxygen and Carbon Monoxide Adsorption,
    P. Fouquet and G. Witte,
    Surf. Sci. 454-456, 256 (2000).
    Abstract

  • A Helium Atom Scattering Study of the Adsorption of NO on Pt(111),
    P. Fouquet, A.P. Graham and G.Witte
    J. Chem. Phys. 112, 7600 (2000).
    Abstract

  • Nanopatterning of Copper (111) Vicinal Surfaces by Oxygen induced Mesoscopic Faceting,
    S. Vollmer, A. Birkner, S. Lukas, G. Witte* and Ch. Wöll,
    Appl. Phys. Lett. 76, 2686 (2000).
    Abstract

  • Variable temperature and ex-situ SPLEEM,
    E.D. Tober, G. Witte and H. Poppa,
    J. Vac. Sci. Tec. A  18, 1845 (2000).
    Abstract

  • Low Energy Vibrational Dynamics of Alkanethiols Adsorbed on Copper Surfaces,
    S.Vollmer, P.Fouquet, G.Witte*, Ch. Boas, M.Kunat, U.Burghaus and Ch. Wöll,
    Surf. Sci. 462, 135 (2000).
    Abstract

  • Nanostrukturierung von Kupferoberflächen durch Sauerstoff- induzierte Rekonstruktionen,
    S. Vollmer, A. Birkner, S. Lukas, G. Witte and Ch. Wöll,
    Zeitschrift für Materialwissenschaft und Werkstofftechnik 31, 845 (2000).
    Abstract

  • Phonons of a Quasi-2D Metal: a Cesium Monolayer on Cu(100),
    G. Witte*and J.P. Toennies,
    Phys. Rev. B 62, 7771 (2000).
    Abstract

1999


  • Low Frequency Vibrations of Alkali Atoms on Cu(001),
    P. Senet, J.P. Toennies and G.Witte*,
    Chem. Phys. Lett. 299, 389 (1999).
    Abstract

  • Metastable (23S) Helium Atom Scattering from Molecular Adsorbates on Pd and Cu Surfaces,
    P. Fouquet and G. Witte*,
    Surf. Rev. Lett. 6, 103 (1999).
    Abstract

  • Low-Frequency Adsorbate Vibrational Relaxation and Sliding Friction,
    B.N.J. Perrson, E. Tosatti, D. Fuhrmann, G. Witte and Ch. Wöll,
    Phys. Rev. B 59, 11777 (1999).
    Abstract

  • Adsorption of Heptanethiol on Cu(110),
    G. Loepp, S. Vollmer, G. Witte and Ch. Wöll,
    Langmuir 15, 3767 (1999).
    Abstract

  • Observation of Metallization Transition of 2D Alkali Metal Films,
    P. Fouquet and G. Witte,
    Phys. Rev. Lett. 83, 360 (1999).
    Abstract

1998


  • Damping of molecular motion on a solid substrate: evidence for electron-hole pair creation,
    G. Witte, K. Weiss, P. Jakob, J. Braun, K.L. Kostov and Ch. Wöll,
    Phys. Rev. Lett. 80, 121 (1998).
    Abstract

  • Metastable (23S) Helium Atom Scattering from NiO(100) and Cu(100) Surfaces,
    P.K. Day, P. Fouquet and G. Witte*,
    Surf. Sci. 400, 140 (1998).
    Abstract

  • Second-harmonic generation from sodium covered Si(111)7x7 surfaces
    J. Boness, G. Marowsky, J. Braun, G. Witte and H.G. Rubahn,
    Surf. Sci. 402-404, 513 (1998).
    Abstract

  • Self-assembled lateral multilayers from thin film alloys of immiscible metals,
    E.D. Tober, R.C.F. Farrow, R.F. Marks, G. Witte, K. Kalki and D.D. Chambliss,
    Phys. Rev. Lett. 81, 1897 (1998).
    Abstract

  • Oxygen induced Reconstructions on Cu(211),
    G. Witte*, J. Braun, D. Nowack, L. Bartels, B. Neu and G. Meyer,
    Phys. Rev. B 58, 13224 (1998).
    Abstract

  • A Helium-Atom-Scattering Study of the Structure and Phonons of the NiO(100) and CoO(100) Surfaces,
    G. Witte*, P. Senet and J.P. Toennies,
    Phys. Rev. B 58, 13264 (1998).
    Abstract

1997


  • Lattice Dynamics of the Ni(977) Surface,
    G. Witte* and J.P. Toennies,
    Phys. Rev. B 55, 1395 (1997).
    Abstract

  • Surface Phonon Dispersion Curves for a Hexagonally Close Packed Metal Surface: Ru(0001),
    J. Braun, K.L. Kostov, G. Witte, L. Surnev, J.G. Skofronik, S. Safron and Ch. Wöll,
    Surf. Sci. 372, 132 (1997).
    Abstract

  • Low Energy Molecular Vibrations investigated by Inelastic Scattering of Thermal Energy He Atoms,
    G. Witte, D. Fuhrmann and Ch. Wöll,
    Chem. Phys, Lett. 265, 347 (1997).
    Abstract

  • CO overlayers on Ru(0001) studied by helium atom scattering: Structure, dynamics, and the influence of coadsorbed H and O.
    J. Braun, K.L. Kostov, G. Witte and Ch. Wöll,
    J. Chem. Phys. 106, 8262 (1997).
    Abstract

  • Micrometer-Sized Nozzles and Skimmers for Atomic-Beam Production of Supersonic He Atom Beams,
    J. Braun, P.K. Day, J.P. Toennies, G. Witte* and E. Neher,
    Rev. Sci. Instrum. 68, 3001 (1997).
    Abstract

  • A Helium Atom Scattering Study of Low Energy Vibrations of CO on Ni(110),
    M. Bertino and G. Witte*,
    Surf. Sci. Lett. 385, L984 (1997).
    Abstract

1996


  • The low-energy thermal excitation spectrum of nitrogen molecules adsorbed on Ni(110): Implications for molecular adsorption sites,
    M. Bertino, W. Steinhögl, H. Range, F. Hofmann, E. Hulpke, G. Witte and Ch. Wöll,
    Appl. Phys. A 62, 95 (1996).
    Abstract

  • A Helium Atom Scattering Study of the Frustrated Translational Mode of CO Chemisorbed on Defects on Copper Surfaces,
    J. Braun, A.P. Graham, F. Hofmann, W. Silvestri, J.P. Toennies and G. Witte,
    J. Chem. Phys. 105, 3258 (1996).
    Abstract

  • Surface-scattering study of the interaction potential of He atoms with the step edges of the Cu(211) and Cu(511) vicinal surfaces,
    S. Miret-Artes, J.P. Toennies and G. Witte,
    Phys. Rev. B 54, 5881 (1996).
    Abstract


1995


  • Comparison of Surface Phonon Dispersion Curves of the Clean and Hydrogen Covered Rh(111) Surface,
    G. Witte, J.P. Toennies and Ch. Wöll,
    Surf. Sci. 323, 228 (1995).
    Abstract

  • A Helium Atom Scattering Study of the Frustrated Translation Mode of CO adsorbed on the Cu(001) Surface,
    J. Ellis, J.P. Toennies and G. Witte,
    J. Chem. Phys. 102, 5059 (1995).
    Abstract

  • Helium Atom Scattering Study of the Dispersion Curves of Step Localized Phonons on Cu(211) and Cu(511),
    G. Witte, J. Braun, A. Lock and J.P. Toennies,
    Phys. Rev.  B 52, 2165 (1995).
    Abstract

  • External vibrations of hydrocarbons on Cu(001),
    G. Witte and Ch. Wöll,
    J. Chem. Phys. (Letters to the Editor) 103, 5860 (1995).
    Abstract

  • A SPALEED structural study of cesium adsorption on stepped copper surfaces Cu(211) and Cu(511),
    J. Braun, J.P. Toennies and G. Witte,
    Surf. Sci. 340, 265 (1995).
    Abstract

  • Untersuchung der Dynamik und Struktur von sauberen und adsorbatbedeckten Oxid- und Metalloberflächen (Investigation of the dynamics and structure of clean and adsorbate-covered oxide and metal surfaces).
    G. Witte,
    Dissertation Georg-August Universität Göttingen (1995).
    Max-Planck-Institut für Strömungsforschung, Bericht 8/1995, ISSN 0436-1199
    Abstract

1994

  • Surface Phonon Dispersion Curves and the Longitudinal Resonance in Ag(001) observed by Helium Atom Scattering,
    N. Bunjes, N.S. Luo, P. Ruggerone, J.P. Toennies and G. Witte,
    Phys. Rev. B 50, 8897 (1994).
    Abstract

1993


  • Observation of the Low-Energy External Vibrations of Benzene on Rh(111),
    G. Witte, H. Range, J.P. Toennies and Ch. Wöll,
    Phys. Rev. Lett. 71, 1063 (1993).
    Abstract

  • High Resolution He-Atom Scattering on NiO(100),
    J.P. Toennies, G. Witte, A.M. Shikin and K.H. Rieder,
    J. Electron Spectrosc. Rel. Phenom. 64/65, 677 (1993).
    Abstract

  • External Vibrations of Molecules on Surfaces: The case of CO and Benzene,
    G. Witte, H. Range, J.P. Toennies and Ch. Wöll,
    J. Electron Spectrosc. Rel. Phenom. 64/65, 715 (1993).
    Abstract

  • The observation of well defined two and three phonon bands in time of flight spectra of helium atoms scattered from the (2x2) structure of CO on Cu(001),
    J. Ellis. A. Reichmuth, J.P. Toennies and G. Witte,
    J. Electron Spectrosc. Rel. Phenom. 64/65, 725 (1993).
    Abstract
     

1991


  • Application of Computer Algebra to Surface Lattice Dynamics,
    R. Berndt, A. Lock, G. Witte and Ch. Wöll,
    Proceedings of the International Symposium on Symbolic and Algebraic Computation,
    p.433ff, S.M. Watt (ed.), acm Press (1991).
    Abstract

  • ORFEUS Alignment Concept,
    R. Graue, D. Kampf, H. Rippel and G. Witte,
    Space Astronomical Telescope and Instruments, SPIE  1494, 377 (1991).
    Abstract

1990


  • Photoemission and He Atom Scattering from Xe Adsorbed on Al(332),
    B.J. Hinch, A. Lock, H.H. Madden, J.P. Toennies and G. Witte,
    J. Electron Spectrosc. Rel. Phenom. 51, 673 (1990).
    Abstract

  • A Helium Atom Scattering Investigation of Facetting of the Stepped Al(332) Surface,
    B.J. Hinch, A. Lock, H.H. Madden, J.P. Toennies and G. Witte,
    Phys. Rev. B 42, 1547 (1990).
    Abstract

  • Surface Phonons of Stepped Metal Surface,
    A. Lock, J.P. Toennies and G. Witte,
    J. Electron Spectrosc. Rel. Phenom. 54/55, 309 (1990).
    Abstract

  • Lattice Dynamical Calculations for stepped Surfaces,
    A. Lock, J.P. Toennies and G. Witte,
    Proceedings of the Third International Conference on Phonon Physics and Sixth International Conference on Condensed Matter, Heidelberg, 1989, p.901ff (World Scientific, Singapore, 1990).

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