On the Behavior of Positrons in CdTe under Compression

N.H. Faresa, b, N. Bouarissab, c, F. Mezragb, c, F. Faresd aDepartment of Informatics, Faculty of Computer Science and Mathematics, University of Bordj-Bou-Arréridj, 34000, Algeria bLaboratory of Materials Physics and Its Applications, University of M'sila, 28000 M'sila, Algeria cPhysics Department, Faculty of Science, University of M'sila, 28000 M'sila, Algeria dElectronics Department, Faculty of Science, University Bordj-Bou-Arréridj, 34000, Algeria

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We report on the positron chemical potential, positron band effective mass, positron affinity, and positron bulk lifetime in cadmium telluride under compression. The calculations are carried out using a pseudo-potential approach. The ionic potential is treated using the point-core approximation. At zero pressure, our results agree reasonably well with those reported in the literature. Upon compression, the positron characteristics vary monotonically indicating that the positron annihilates differently in CdTe when pressure is applied. The present study should provide essential information in the positron annihilation in CdTe under pressure.

DOI:10.12693/APhysPolA.137.502 topics: positron, CdTe, high-pressure\\vs*{10pt}