The electronic structure of Li2B4O7(110) and Li2B4O7(100)

Authors

D. W. Wooten, Air Force Institute of Technology
I. Ketsman, University of Nebraska - Lincoln
J. 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
J. M. Brown, Cincinatti Children’s Hospital Medical Center
P. A. Dowben, University of Nebraska-LincolnFollow

Document Type

Article

Date of this Version

2010

Citation

Eur. Phys. J. Appl. Phys. 52, 31601 (2010)

Comments

© EDP Sciences

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

Abstract

The band structure of Li₂B₄O₇(100) and Li₂B₄O₇(110) was experimentally determined using a combination of angle-resolved photoemission and angle-resolved inverse photoemission spectroscopies. The experimental band gap depends on crystallographic direction but exceeds 8.8 eV, while the bulk band gap is believed to be in the vicinity of 9.8 eV, in qualitative agreement with expectations. The occupied bulk band structure indicates relatively large values for the hole mass; with the hole mass as significantly larger than that of the electron mass derived from the unoccupied band structure. The Li₂B₄O₇(110) surface is characterized by a very light mass image potential state and a surface state that falls within the band gap of the projected bulk band structure.