Split interstitial defect - known to be the most stable defect in diamond. Prior to our (Saada, Kalish, Adler)
study, path to its formation unclear.
Carbon atoms displaced with energy of 64EV - mimics endstage of
damage cascade after ion-implantation. Classical MD with Tersoff potential.
To locate the split interstitial within the diamond sample we changed bond color at the bondlength characteristic of the defect. The defect
jumped out at us.
In the sample at left 3 fold coordinated atoms
and bonds between atoms of different coordinations are also colorcoded to shown the development clearly. Press for animation that shows a breathing-mode phonon.