Physics and Astronomy Calendar

It is well known that at the temperatures above Tc superconducting order parameter, being zero, fluctuates in time and space. These fluctuations lead to the experimentally observable corrections to the thermodynamic and dynamic properties of metals. We theoretically study the manifestation of the superconducting fluctuations on the current noise in the tunnel junction in the vicinity of the superconducting transition. It turns out that the current noise acquires singular in T-Tc correction, which is peaked at the Josephson frequency. This correction originates from the fluctuating ac Josephson current. Recent experimental studies confirm this phenomenon.