Faculty Publications

Document Type

Article

Journal/Book/Conference Title Title

Physical Review Letters

Volume

106

Issue

13

First Page

137602-1

Last Page

137602-4

Abstract

Electron emission from the negative electron affinity (NEA) surface of hydrogen terminated, boron doped diamond in the [100] orientation is investigated using angle resolved photoemission spectroscopy (ARPES). ARPES measurements using 16 eV synchrotron and 6 eV laser light are compared and found to show a catastrophic failure of the sudden approximation. While the high energy photoemission is found to yield little information regarding the NEA, low energy laser ARPES reveals for the first time that the NEA results from a novel Franck-Condon mechanism coupling electrons in the conduction band to the vacuum. The result opens the door to the development of a new class of NEA electron emitter based on this effect.

Department

Department of Physics

Comments

First published in Physical Review Letters v. 106, n. 13 (2011), published by the American Physical Society. DOI: 10.1103/PhysRevLett.106.137602

Original Publication Date

4-1-2011

DOI of published version

10.1103/PhysRevLett.106.137602

Repository

UNI ScholarWorks, University of Northern Iowa, Rod Library

Date Digital

2011

Copyright

©2011 J.D. Rameau, J. Smedley, E.M. Muller, T.E. Kidd, and P.D. Johnson. The copyright holder has granted permission for posting.

Language

EN

File Format

application/pdf

Included in

Physics Commons

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