Peculiarities of Composition and Temperature Dependence of Energy-Band Parameters of ZnxCdyHg1-x-yTe
A.M. Andrukhiva, V.I. Ivanov-Omskiib, J. Politc and E.M. Sheregiia,c
aI. Franko Drogobich Pedagogical University, Drogobich, Ukraine
bA. Ioffe Physico-Technical Institute of Russian Academy of Science, St.-Petersburg, Russia
cInstitute of Physics, Pedagogical University, Rejtana 16a, 35-959 Rzeszów, Poland
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The influence of addition of Zn on band parameters of ZnxCdyHg1-x-yTe solid solution at different temperatures (4.2-200 K) was investigated. The cyclotron resonance at 4.2 K and magnetophonon reso­nance at 77-200 K were used to determine band structure parameters. The temperature dependence of band structure parameters (energy gap, effec­tive mass of electron) for the composition of series of epilayers (x varied in 0.08-0.20 range and y - 0.07-0.12) was obtained. It is found that band struc­ture parameters for some compositions (for example x = 0.17, y = 0.08) are almost independent from temperature and equal: γ₁L= 19.55, γ₂L = γ₃L = 8.5, KL = 6.48, F = -0.5, Eg = 0.35 eV, Ep = 17.9 eV. The effective mass of electrons was found to be greater with addition of Zn while the effective mass of heavy holes is left unchanged.
DOI: 10.12693/APhysPolA.87.513
PACS numbers: 71.25.Tn