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Metastable Frenkel pair defect in graphite: Source of wigner energy?

Lookup NU author(s): Professor Patrick Briddon


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Irradiation of graphite results in the production of I-V pairs. Depending on the structure of the interstitial, these interact to form either an intimate I-V pair or a Stone-Wales defect. The intimate I-V pair can recombine into perfect graphite with a barrier of 1.3 eV, releasing 10.1-10.8 eV in the process. This defect represents a final barrier to recombination which must be overcome, and believed this complex to be the cause of the major 200°C Wigner energy release peak in graphite.

Publication metadata

Author(s): Ewels CP, Telling RH, El-Barbary AA, Heggie MI, Briddon PR

Publication type: Article

Publication status: Published

Journal: Physical Review Letters

Year: 2003

Volume: 91

Issue: 2

Pages: 025505/1-025505/4

ISSN (print): 0031-9007

ISSN (electronic): 1079-7114

Publisher: American Physical Society


DOI: 10.1103/PhysRevLett.91.025505


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