Effect of electron irradiation on the fluctuation conductivity in YBa_2Cu_3O_(7--δ) single crystals

摘要

In this work, the evolution of the excess conductivity of the YВа~(2)Сu~(3)О~(7−δ)single crystals under electron irradiation is studied. It is shown that irradiation with electrons leads to a significant expansion of the temperature interval that excess conductivity exists. Therefore, the value of the transverse coherence length ξ~(с)(0) increases by a factor of 1.4 and the point of the 2D–3D crossover shifts with respect to the temperature.