title: The interfacial properties of MgCl(2) thin films grown on Si(111)7 x 7.
abstract: Photoelectron spectroscopy with synchrotron radiation and low energy electron diffraction (LEED) were used in order to study the MgCl(2)Si(111) system. At submonolayer coverage of MgCl(2), a new LEED pattern was observed corresponding to a (sqr rt 3 x sqr rt 3)R30 degrees overlayer superimposed on the underlying reconstructed Si(111)7 x 7. The surface species at this stage are mainly molecular MgCl(2) and MgCl(x) (x<2) or MgO(x)Cl(y) attached to the Si substrate through Cl bridges coexisting with monodentate SiCl. The interfacial interaction becomes more pronounced when the submonolayer coverage is obtained by annealing thicker MgCl(2) layers, whereby desorption of molecular MgCl(2) is observed leaving on the nonreconstructed silicon surface an approximately 0.2 ML thick MgCl(x) layer which again forms the (sqr rt 3 x sqr rt 3 )R30 degrees superstructure.
authors.affiliation: Department of Chemical Engineering, University of Patras, Rion, Patras, Greece. skarak@chemeng.upatras.gr
authors.forename: Stavros
authors.initials: S
authors.lastname: Karakalos
authors.forename: Angeliki
authors.initials: A
authors.lastname: Siokou
authors.forename: Vasileios
authors.initials: V
authors.lastname: Dracopoulos
authors.forename: Frantisek
authors.initials: F
authors.lastname: Sutara
authors.forename: Tomas
authors.initials: T
authors.lastname: Skala
authors.forename: Michal
authors.initials: M
authors.lastname: Skoda
authors.forename: Spyros
authors.initials: S
authors.lastname: Ladas
authors.forename: Kevin
authors.initials: K
authors.lastname: Prince
authors.forename: Vladimir
authors.initials: V
authors.lastname: Matolin
authors.forename: Vladimir
authors.initials: V
authors.lastname: Chab