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In this study we observed the reproducible superconducting state in Cd 3 As 2 thin films without any external stimuli. Comparison with our previous results reveals similar qualitative behavior for films synthesized by different methods, while the difference in the values of the critical parameters clearly shows the possibility to control this state. The X-ray diffraction measurements demonstrate the presence of the tetragonal Cd 3 As 2 crystal phase in studied films. Measurements of high-field magnetoresistance reveal pronounced Shubnikov-de Haas oscillations. The analysis of these oscillations suggests that, due to high carrier concentration in studied Cd 3 As 2 films, the initial Dirac semimetal phase may be partially suppressed, which, however, does not contradict with possible topological nature of the observed superconductivity.

By the original method, using the sequential high-purity Mn and Sb metals evaporation, followed by annealing under high vacuum conditions, MnSb semiconductor films were synthesized. It is shown that the high chemical activity of nanostructured Mn and Sb films significantly reduces the manganese antimonide evaporation temperature. Films are p- type and have a high charge carriers mobility.

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