Influence of superconducting transition on low temperature jump-like deformation of metals and alloys

Systemized results on the influence of the superconducting transition upon the macroscopic low temperature jump-like deformation are presented for a number of pure metals and alloys. In all cases qualitatively similar results were observed - in the superconducting state the jump-like deformation is either absent or underdeveloped as compared to the normal state. This finding is discussed in terms of current concepts of the nature of low temperature instability. (orig.)