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A remarkable several times increase (up to 10 K) of the superconductingcritical temperature Tc has been observed in point contacts created on the baseof single crystals AFe$_2$As$_2$ (A = K, Cs, Rb). Possible reasons for such aTc increase in point contacts are briefly discussed on a qualitative level.Among them, it is most likely attributed to interfacial carrier doping and/oruniaxial non-homogeneous pressure arising when the contact is created.

Enhanced critical temperatures in the strongly overdoped iron-based superconductors AFe$_2$As$_2$ (A = K, Cs, Rb) observed by point contacts