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(a) Projection along the  direction of wurtzite InN. P1, P2, and P3 correspond to the origins of the displacements when the dislocation is introduced. P1 and P3 are located between two widely spaced planes, whereas P2 is located between two closely spaced planes. [(b)–(d)] Relaxed atomic structures of the -edge dislocation core with the Burgers vector . In detail: (b) four-atom core with the origin in P1, (c) five/seven-atom core with the origin in P2 and (d) eight-atom core with the origin in P3. Black (white) circles represent nitrogen (indium) atoms.
Total energy stored in a cylinder of radius as a function of ; the arrow points out the core radius . The three lines trace the linear parts of the curves, respectively.
Stillinger-Weber potential parameters for wurtzite InN. The Stillinger-Weber potential is expressed as , , and with for and 0, for , , and .
Comparison of lattice parameters (Å), elastic constants (GPa), point defect energies (eV), and IDB and .
Slope , core radius , and energy for the -edge dislocation in InN compared with GaN.
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