Atomic configurations at InAs partial dislocation cores associated with Z-shape faulted dipoles

作者：Li Luying^*; Gan Zhaofeng; McCartney Martha R; Liang Hanshuang; Yu Hongbin; Gao Yihua; Wang Jianbo; Smith David J

来源：Scientific Reports, 2013, 3(1): 3229.

DOI：10.1038/srep03229

The atomic arrangements of two types of InAs dislocation cores associated by a Z-shape faulted dipole are observed directly by aberration-corrected high-angle annular-dark-field imaging. Single unpaired columns of different atoms in a matrix of dumbbells are clearly resolved, with observable variations of bonding lengths due to excess Coulomb force from bare ions at the dislocation core. The corresponding geometric phase analysis provides confirmation that the dislocation cores serve as origins of strain field inversion while stacking faults maintain the existing strain status.

• 出版日期2013-11-15
• 单位武汉大学