scanning tunneling microscopy;
surface relaxation and reconstruction;
alkaline earth metals;
titanium;
surface structure;
morphology;
roughness;
and topography;
low index single crystal surfaces;
surface defects;
D O I:
10.1016/j.susc.2006.05.043
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Scanning tunneling microscopy (STM) is used to investigate the (001) surface structure of Nb doped SrTiO3 single crystals annealed in ultra high vacuum (UHV). Atomically resolved images of the (2 x 2) reconstructed surface are obtained after annealing a chemically etched sample. With further annealing dotted row domains appear, which coexist with the (2 x 2) reconstruction. The expansion of these domains with further annealing gives rise to the formation of a TiO2 enriched c(4 x 4) reconstruction. (c) 2006 Elsevier B.V. All rights reserved.
机构:
Penn State Univ, Dept Chem Engn, University Pk, PA 16802 USAPenn State Univ, Dept Chem Engn, University Pk, PA 16802 USA
Lin, Yangzheng
Fichthorn, Kristen A.
论文数: 0引用数: 0
h-index: 0
机构:
Penn State Univ, Dept Chem Engn, University Pk, PA 16802 USA
Penn State Univ, Dept Phys, University Pk, PA 16802 USAPenn State Univ, Dept Chem Engn, University Pk, PA 16802 USA
机构:
Penn State Univ, Dept Chem Engn, University Pk, PA 16802 USAPenn State Univ, Dept Chem Engn, University Pk, PA 16802 USA
Lin, Yangzheng
Fichthorn, Kristen A.
论文数: 0引用数: 0
h-index: 0
机构:
Penn State Univ, Dept Chem Engn, University Pk, PA 16802 USA
Penn State Univ, Dept Phys, University Pk, PA 16802 USAPenn State Univ, Dept Chem Engn, University Pk, PA 16802 USA