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A brief overview of the superconducting energy gap studies on 122-type familyof iron pnictides is given. It seems that the situation in the hole-dopedBa1-xKxFe2As2 is well resolved. Most of the measurements including thepresented here point-contact Andreev reflection spectra agree on existence ofmultiple nodeless gaps in the excitation spectrum of this multiband system. Thegaps have basically two sizes - the small one with a strength up to the BCSweak coupling limit and the large one with a very strong coupling with2Delta/kTc ~ 6 - 8. In the electron doped Ba(Fe1-xCox)2As2 the most of theexperiments including our point contact measurements reveal in quite broadenedspectra only a single gap with a strong coupling strength. The high precisionARPES measurements on this system identified two gaps but very close to eachother, both showing a strong coupling with 2Delta/kTc ~ 5 and 6, respectively.

Point contact Andreev reflection spectroscopy of superconducting energy gaps in 122-type family of iron pnictides