A novel anion interstitial defect structure in zinc-blende materials: A first-principles study Yuan Yin, Guangde Chen, Honggang Ye, Xiangyang Duan, Youzhang Zhu and Yelong Wu EPL, 114 3 (2016) 36001 Published online: 20 May 2016 DOI: 10.1209/0295-5075/114/36001