F.J. Himpsel, T.A. Jung, et al.
Surface Review and Letters
Scanning tunneling microscopy is used to study the surface structural and electronic properties of cleaved single crystals of Bi2.15Sr1.7CaCu2O8+ Images with atomic resolution reveal atomic chains with sinusoidal modulations running along the perovskite cell axis with a periodicity of 9 to 10 unit cells. These atomic chains stack along the b direction with a translational vector of one unit, resulting in an incommensurate periodicity of about 4.75 units along the a direction. In contrast to other reports, no evidence of missing Bi-atom rows is found. Spectroscopic studies show zero density of states at the Fermi level, implying that the surface Bi-O layer is nonmetallic. © 1989 The American Physical Society.
F.J. Himpsel, T.A. Jung, et al.
Surface Review and Letters
R. Ghez, J.S. Lew
Journal of Crystal Growth
S.F. Fan, W.B. Yun, et al.
Proceedings of SPIE 1989
Revanth Kodoru, Atanu Saha, et al.
arXiv