The study of the interaction of indium with tellurium in silicon |
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Authors: | G Tessema R Vianden |
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Institution: | (1) Faculty of Science, Department of Physics, Addis Ababa University, P.O. BOX 1176, Addis Ababa, Ethiopia;(2) Helmholtz-Institut für Strahlen und Kernphysik, Nussalle 14–16, 53115 Bonn, Germany |
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Abstract: | The perturbed γ–γ angular correlation method has been employed to study indium-impurity pairs in silicon, consisting of the probe atom (111In/111Cd) and several group-VI donors. Such pairs can be identified via the interaction between the quadrupole moments of the probe nucleus and the electric field gradient (EFG) associated with the formed defect complex. A new quadrupole interaction frequency (QIF) of νQ=444(1) MHz (η=0) is measured at T=293 K in Te implanted silicon after annealing the sample above 700 K. The complex is attributed to the In-Te pair along 〈100〉-crystal axis in silicon. In addition, the temperature dependence of the QIF characterizing the pair has also been studied. The implantations of S and Se could not lead to the formation of observable complexes despite similar treatment of all samples. PACS 61.72.-y; 76.80.+y; 61.72.Cc |
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