The surface core level shift for lithium at the surface of lithium borate

Authors

David Wooten, Air Force Institute of Technology
I. Ketsman, University of Nebraska - Lincoln
Jie Xiao, University of Nebraska - Lincoln
Ya. B. Losovyj, University of Nebraska - Lincoln
J. Petrosky, Air Force Institute of Technology
J. McClory, Air Force Institute of Technology
Ya. V. Burak, Institute of Physical Optics
V. T. Adamiv, Institute of Physical Optics
P. A. Dowben, University of Nebraska-LincolnFollow

Date of this Version

2010

Citation

Physica B 405 (2010) 461–464

Comments

© 2009 Elsevier B.V.

This document is a U.S. government work and is not subject to copyright in the United States.

doi:10.1016/j.physb.2009.08.312

Abstract

The shallow Li 1s core level exhibits a surface-to-bulk core level shift for the stoichiometric Li₂B₄O₇(110) surface. Angle-resolved photoemission spectroscopy was used to indentify Li 1s bulk and surface core level components at binding energies -56.5 ± 0.4 and -53.7 ± 0.5 eV, respectively.We find photoemission evidence for surface states of Li₂B₄O₇(110) that exist in the gap of the projected bulk density of states. The existence of surface states is consistent with the large surface-to-bulk core level shift for the Li 1s core.