| The surface states of lithium tetraborate. | |
| | |
MedLine Citation:
|
PMID: 23288512 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
The different low index surface terminations of lithium tetraborate, Li(2)B(4)O(7), are dominated by electronic states that fall within the band gap of the projection of the bulk states. As a pyroelectric material, lithium tetraborate, Li(2)B(4)O(7), is a wide band gap dielectric, yet the (110) surface has a much smaller band gap because of occupied surface states that fall at binding energies between the valence band maximum and the Fermi level. The (100) surface is dominated, however, by unoccupied surface states that also fall in the gap between the conduction band minimum and the valence band maximum, but at binding energies just below the conduction band minimum. These very different types of surface states are consistent with the assignment of occupied surface states to states that are observed near the Fermi level in photoemission studies of Li(2)B(4)O(7)(110). The unoccupied surface states are also seen to be consistent with the inverse photoemission spectra of Li(2)B(4)O(7)(100). Clearly, the different surface terminations of lithium tetraborate yield very different types of surface electronic states. |
| | |
Authors:
|
Lu Wang; Wai-Ning Mei; Peter A Dowben |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2013-1-04 |
Journal Detail:
|
Title: Journal of physics. Condensed matter : an Institute of Physics journal Volume: 25 ISSN: 1361-648X ISO Abbreviation: J Phys Condens Matter Publication Date: 2013 Jan |
Date Detail:
|
Created Date: 2013-1-4 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101165248 Medline TA: J Phys Condens Matter Country: - |
Other Details:
|
Languages: ENG Pagination: 045014 Citation Subset: - |
Affiliation:
|
Department of Physics, University of Nebraska at Omaha, Omaha, NE 68182-0266, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Telomere length and telomerase activity impact the UV sensitivity syndrome xeroderma pigmentosum.
Next Document: Negative absolute temperature for motional degrees of freedom.