Auger electron emission initiated by the creation of valence-band holes in graphene by positron annihilation

V. A. Chirayath (), V. Callewaert, A. J. Fairchild, M. D. Chrysler, R. W. Gladen, A. D. Mcdonald, S. K. Imam, K. Shastry, A. R. Koymen, R. Saniz, B. Barbiellini, K. Rajeshwar, B. Partoens and A. H. Weiss
Additional contact information
V. A. Chirayath: University of Texas at Arlington
V. Callewaert: Universiteit Antwerpen
A. J. Fairchild: University of Texas at Arlington
M. D. Chrysler: University of Texas at Arlington
R. W. Gladen: University of Texas at Arlington
A. D. Mcdonald: University of Texas at Arlington
S. K. Imam: University of Texas at Arlington
K. Shastry: University of Texas at Arlington
A. R. Koymen: University of Texas at Arlington
R. Saniz: Universiteit Antwerpen
B. Barbiellini: Northeastern University
K. Rajeshwar: University of Texas at Arlington
B. Partoens: Universiteit Antwerpen
A. H. Weiss: University of Texas at Arlington

Nature Communications, 2017, vol. 8, issue 1, 1-7

Abstract: Abstract Auger processes involving the filling of holes in the valence band are thought to make important contributions to the low-energy photoelectron and secondary electron spectrum from many solids. However, measurements of the energy spectrum and the efficiency with which electrons are emitted in this process remain elusive due to a large unrelated background resulting from primary beam-induced secondary electrons. Here, we report the direct measurement of the energy spectra of electrons emitted from single layer graphene as a result of the decay of deep holes in the valence band. These measurements were made possible by eliminating competing backgrounds by employing low-energy positrons (

Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms16116

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DOI: 10.1038/ncomms16116

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