Toggle Main Menu Toggle Search

ePrints

Metastable Frenkel pairs and the W11-W14 electron paramagnetic resonance centers in diamond

Lookup NU author(s): Dr Jon Goss, Dr Mark Rayson, Professor Patrick Briddon

Downloads

Full text for this publication is not currently held within this repository. Alternative links are provided below where available.


Abstract

Diamond is a material that shows great promise for particle detection applications. However, under irradiation with energetic particles, many thermally stable defects are created, made up of lattice vacancies, self-interstitials, and complexes with impurities. Relatively distant Frenkel (vacancy-self-interstitial) pairs have long been used to explain optical and magnetic spectra in irradiated material. However, in diamond we show, using first-principles methods, that the ability of carbon to form s p2 -, s p3 -, and π -bonding configurations leads to particularly strong reconstructions between vacancy-self-interstitial pairs within a few atomic spacings of each other. The resultant complexes are anticipated to be optically and paramagnetically active, and we propose correlation of negatively charged Frenkel pairs with the W11-W14 paramagnetic centers, where substitutional nitrogen donors act as source of electrons and are not an intimate component part of the paramagnetic defects. © 2007 The American Physical Society.


Publication metadata

Author(s): Goss JP, Rayson MJ, Briddon PR, Baker JM

Publication type: Article

Publication status: Published

Journal: Physical Review B

Year: 2007

Volume: 76

Issue: 4

ISSN (print): 1098-0121

ISSN (electronic): 1550-235X

Publisher: American Physical Society

URL: http://dx.doi.org/10.1103/PhysRevB.76.045203

DOI: 10.1103/PhysRevB.76.045203


Altmetrics

Altmetrics provided by Altmetric


Actions

    Link to this publication


Share