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  1. No Access

    Article

    Structure of a model TiO2 photocatalytic interface

    The interaction of water with TiO2 is crucial to many of its practical applications, including photocatalytic water splitting. Following the first demonstration of this phenomenon 40 years ago there have been num...

    H. Hussain, G. Tocci, T. Woolcot, X. Torrelles, C. L. Pang… in Nature Materials (2017)

  2. No Access

    Article

    Initial corrosion observed on the atomic scale

    Electrochemical corrosion creates problems for engineers, and destroys over 3% of the world's GDP. But decomposition processes can be useful too, for example in the formation of porous metals. For good or ill,...

    F. U. Renner, A. Stierle, H. Dosch, D. M. Kolb, T.-L. Lee, J. Zegenhagen in Nature (2006)

  3. No Access

    Article

    X-ray standing wave investigations of Si dopant incorporation in GaN

    The synchrotron radiation technique of x-ray standing waves (XSW), which allows to directly obtain structural and element-specific data, was successfully used for the investigation of the dopant site distribut...

    M. Siebert, Th. Schmidt, J. I. Flege, J. Zegenhagen… in MRS Online Proceedings Library (2005)

  4. No Access

    Article

    Synchrotron X-ray diffraction study of SrRuO3/SrTiO3/SrRuO3 nano-sized heterostructures grown by laser MBE

    Structural investigation using X-ray synchrotron radiation has been performed on SrRuO3/SrTiO3/SrRuO3 epitaxial heterostructures, with each constituent layer a few unit cell thick grown on (001) SrTiO3 substra...

    C. Aruta, M. Angeloni, G. Balestrino… in The European Physical Journal B - Condense… (2005)

  5. No Access

    Article

    Microscopic structure and structuring of perovskite surfaces and interfaces: SrTiO3, RBa2Cu3O7-δ

    surfaces and bicrystal interfaces and the growth of YBa2Cu3O7-δ thin films on such substrates using scanning tunneling microscopy and X-ray diffraction. Proper annealing of SrTiO3 in oxygen and/or ultrahigh vacu...

    J. Zegenhagen, T. Haage, Q.D. Jiang in Applied Physics A (1998)

  6. No Access

    Article

    Atomic Scale Engineering of SrTiO3 Single Crystal Surfaces and Bicrystal Boundaries for Epitaxial Growth of Oxide Thin Films

    We introduce a new annealing procedure to prepare well defined surfaces of SrTiO3 single crystal and bicrystal substrates. Annealing SrTiO3 (001) substrates in oxygen and then in ultra high vacuum produces a unif...

    Q. D. Jiang, J. Zegenhagen in MRS Online Proceedings Library (1997)

  7. No Access

    Article

    Local lattice anomalies in underdoped YBa2Cu3O7-Σ probed by X-ray absorption fine structure

    Temperature-dependent local lattice anomalies in underdoped YBa2Cu3O7-Σ are studied by extended X-ray absorption fine structure (EXAFS) in a fluorescence mode. The in-plane polarized Cu A^-EXAFS is measured on un...

    H. Oyanagl, J. Zegenhagen in Journal of Superconductivity (1997)

  8. No Access

    Article

    A titanium-rich (111) surface of SrTiO3 single crystals by thermal annealing

    A very smooth (111) titanium-rich surface was obtained by annealing SrTiO3 single crystals in UHV. The surface structure was investigated with SEM, STM and LEED and was found to consist of terraces, interrupted b...

    W.M. Sigmund, M. Rotov, F. Aldinger, Q. D. Jiang, J. Brunen… in Applied Physics A (1997)

  9. No Access

    Article

    Contributions of multipole terms to the photoelectric yield in X-ray standing-wave measurements

    The influence of higher-order multipole terms in the photoelectron yield on the result of an X-ray Standing Wave (XSW) measurement is discussed. The contributions of dipole, quadrupole and octupole term are an...

    I. A. Vartanyants, J. Zegenhagen in Il Nuovo Cimento D (1997)

  10. No Access

    Article

    In-Plane Asymmetries on the Ge(111)-c(2×8) Surface Mapped with the Scanning Tunneling Microscope

    We report on new experimental studies of the Ge(111)-c(2×8) reconstruction performed with low-energy electron diffraction. (LEED) and scanning tunneling microscopy (STM). Weak quarter-order reflections are pre...

    P. Molinàs-Mata, J. Zegenhagen, M. Böhringer, N. Takeuchi… in MRS Online Proceedings Library (1992)

  11. No Access

    Article

    Determination of lattice mismatch in NiSi2 overlayers on Si(111)

    We determined the perpendicular overlayer mismatch for type A and type B NiSi2 samples of thicknesses ranging from about 200 to 1000 Å via bulk x-ray diffraction. An increase in the density of dislocations which ...

    J. Zegenhagen, M. A. Kayed, K. -G. Huang, W. M. Gibson, J. C. Phillips… in Applied Physics A (1987)

  12. No Access

    Article

    X-Ray standing wave analysis of bismuth implanted in Si(110)

    Perfect crystal silicon samples implanted with 60 KeV Bi atoms along the [110] surface normal direction were analyzed with X-ray standing waves. Two reflection orders, (220) and (440) were used with synchrontr...

    N. Hertel, G. Materlik, J. Zegenhagen in Zeitschrift für Physik B Condensed Matter (1985)