Research Papers in Physics and Astronomy

 

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.

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