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Semiconductor Physics, Quantum Electronics & Optoelectronics. 2006. V. 9, N 2. P. 017-022.
Effect of symmetry center losses on energy bands
and carrier kinematics in Zn3As2 and Cd3As2
Kherson National Technical University, Department of General and Applied Physics
24, Berislavskoye shosse, 73008 Kherson, Ukraine, e-mail: gp47@mail.ru
Abstract. The comparative analysis of the band structure and carrier kinematics for n-
Cd 3 As 2 and p-Zn 3 As 2 has been executed. The influence of presence and absence of
symmetry center in different crystalline phases of the above materials is explored. The
direct and indirect solutions of dispersion equations were used for the analysis. The
results of researches are presented in the form of graphic dependences. The splitting of
energy bands caused by the symmetry center loss is estimated. Such splitting is maximal
along any directions normal to the main crystalline axis. The principle possibility of the
carrier separation by spin with the use of found distinction for the modules of their
velocities is shown.
Keywords: dispersion law, band structure, cadmium arsenide, zinc arsenide.
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