The interactions of C with the probe nucleus 111In were studied in Ge using the perturbed angular correlation method, which has the ability to detect the microscopic environments of the probe atom by means of the interaction of the nuclear moments of the probe with the surrounding electromagnetic fields. After high-dose C implantation of Ge, two complexes were identified by their unique quadrupole interaction frequencies. An interaction frequency of νQ1 = 207(1) MHz (η = 0.16) appeared upon annealing at below 650C. Above 650C, it was replaced by a second interaction frequency of νQ2 = 500MHz (η = 0). The frequencies were attributed to 2 different C–In pairs. The orientation of the corresponding electric field gradients and the thermal stability of the defect complexes were studied

Indium–Carbon Pairs in Germanium. G.Tessema, R.Vianden: Journal of Physics - Condensed Matter, 2003, 15[30] 5297-306