The effect of irradiation with fast electrons on the conductivity in the basal plane of HTSC single crystals of <$E roman {YBa sub 2 Cu sub 3 O sub {7- delta}}> is studied. It was found that electron irradiation leads to significant degradation of the superconducting characteristics, up to the complete disappearance of superconductivity. It was detected that even a significant decrease in Tc with a noticeable increase in <$E rho> in the temperature range of Tc - 300 K is not accompanied by the appearance of an S-shaped dependence <$E rho>(T). In this case, the dependences <$E rho>(Т) in the basal plane, measured after irradiation with low and medium doses, are satisfactorily described within the framework of the resonating valence bond theory.

• Вовк Руслан Володимирович (1966–) (фізико-математичні науки)

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