The influence of crystallographic order upon the electronic structure of thin mercury overlayers

Authors

Peter A. Dowben, University of Nebraska-LincolnFollow
M. Onellion, University of Wisconsin, Madison
Shikha Varma, Syracuse University
Y.J. Kime, Syracuse University
J.L. Erskine, University of Texas, Austin, Texas

Date of this Version

May 1989

Comments

Published in the Journal of Vacuum Science and Technology A 7 (3), May/Jun 1989. Copyright © 1989 American Vacuum Society. Used by permission. For free online abstracts, see http://www.avs.org/literature.jvst.b.aspx

Abstract

Thin ( 1-7 monolayer) well-ordered, disordered, and liquid Hg overlayers on Ag(100) have been investigated with angle resolved photoemission and low-energy electron diffraction. The well-ordered overlayers exhibit new electronic states as a result of the strained, cubic, overlayer crystallographic structure. The new electronic states depend upon the long-range crystallographic order of the overlayer, not simply the local crystallographic symmetry. The photoemission cross section and branching ratio of the 5d mercury states depends on the overlayer long-range crystallographic order and cannot be explained by photoelectron diffraction.