- Email: [email protected]
Angular resolved auger emission and LEED Kikuchi intensities at 850 eV from a Ni(100) surface
A99 Surface Science 0 North-Holland
93 (1980) 398-406 Publishing Company
ANGULAR RESOLVED AUGER EMISSION AND LEED KIKUCHI INTENSITIES AT 850 eV FROM A Ni(lOO) SURFACE H. HILFERINK, E. LANG and K. HEINZ Institut fiir Angewandte Physik, Lehrstuhl fiir FestkGrperphysik der Universit& Erlangen-Niirnberg, Erwin-Rommel-Strasse I, D-8520 Erlangen, Germany Received
13 September
1979
Azimuthal and polar angle profiles of the Kikuchi intensities near 850 eV from a Ni(lOO) surface and of the Ni (850 eV) LsW Auger emission from that surface are presented. The comparison gives agreement with respect to the structure of the spectra. It is concluded that the corresponding inner sources are nearly isotropic in both cases and that the measured angular dependence is dominated by diffraction.
Surface Science 0 North-Holland
93 (1980) 407-422 Publishing Company
THE RECONSTRUCTION OF HALF A MONOLAYER
OF THE W( 100) SURFACE IN THE PRESENCE OF OXYGEN
II. Kinetics of the reconstruction H.M. KRAMER and E. BAUER Technische Universit& Clausthal, Leibnizstr. 4, D-3392 Clausthal-Zellerfeld, GBttingen-Clausthal, Germany Received
10 September
1979; accepted
for publication
28 November
and SFB 126,
1979
The tungsten surface covered with half a monolayer of oxygen reconstructs upon annealing. In this process a domain structure is generated. The average domain size is found to be a function of annealing temperature and time. An attempt is made to explain the experimentally observed growth rates during isothermal anneals by a simple model based on place exchange and diffusion with an activation energy E = 1.88 eV.
Surface Science 0 North-Holland
93 (1980) 423 -430 Publishing Company
CALCULATION OF DIPOLE MOMENTS OF EDGE ATOMS ON STEPPED METAL SURFACES B. KRAHL-URBAN,
H. WAGNER and R. BUTZ
Institut fiir GrenzflMenforschung D-51 70 Jiilich, Germany Received
30 August
1979; accepted
und Vakuumphysik, for publication
Kernforschungsanlage
16 October
Jiilich GmbH,
1979
A method for a semiempirical calculation of surface dipole moments is proposed. The calculation is based on a concept which correlates electronegativity, dipole moment and work function change with the electronic and geometrical properties of surface atoms. Dipole moments on different stepped tungsten, platinum and gold surfaces are calculated and compared with experimental results.
93 (1980) 398-406 Publishing Company
ANGULAR RESOLVED AUGER EMISSION AND LEED KIKUCHI INTENSITIES AT 850 eV FROM A Ni(lOO) SURFACE H. HILFERINK, E. LANG and K. HEINZ Institut fiir Angewandte Physik, Lehrstuhl fiir FestkGrperphysik der Universit& Erlangen-Niirnberg, Erwin-Rommel-Strasse I, D-8520 Erlangen, Germany Received
13 September
1979
Azimuthal and polar angle profiles of the Kikuchi intensities near 850 eV from a Ni(lOO) surface and of the Ni (850 eV) LsW Auger emission from that surface are presented. The comparison gives agreement with respect to the structure of the spectra. It is concluded that the corresponding inner sources are nearly isotropic in both cases and that the measured angular dependence is dominated by diffraction.
Surface Science 0 North-Holland
93 (1980) 407-422 Publishing Company
THE RECONSTRUCTION OF HALF A MONOLAYER
OF THE W( 100) SURFACE IN THE PRESENCE OF OXYGEN
II. Kinetics of the reconstruction H.M. KRAMER and E. BAUER Technische Universit& Clausthal, Leibnizstr. 4, D-3392 Clausthal-Zellerfeld, GBttingen-Clausthal, Germany Received
10 September
1979; accepted
for publication
28 November
and SFB 126,
1979
The tungsten surface covered with half a monolayer of oxygen reconstructs upon annealing. In this process a domain structure is generated. The average domain size is found to be a function of annealing temperature and time. An attempt is made to explain the experimentally observed growth rates during isothermal anneals by a simple model based on place exchange and diffusion with an activation energy E = 1.88 eV.
Surface Science 0 North-Holland
93 (1980) 423 -430 Publishing Company
CALCULATION OF DIPOLE MOMENTS OF EDGE ATOMS ON STEPPED METAL SURFACES B. KRAHL-URBAN,
H. WAGNER and R. BUTZ
Institut fiir GrenzflMenforschung D-51 70 Jiilich, Germany Received
30 August
1979; accepted
und Vakuumphysik, for publication
Kernforschungsanlage
16 October
Jiilich GmbH,
1979
A method for a semiempirical calculation of surface dipole moments is proposed. The calculation is based on a concept which correlates electronegativity, dipole moment and work function change with the electronic and geometrical properties of surface atoms. Dipole moments on different stepped tungsten, platinum and gold surfaces are calculated and compared with experimental results.