Inhaltszusammenfassung

In the present work we report the results of studying the influence of the uranium-ion irradiation of the Bi2Sr2CaCu2O8 thin films on the high-temperature part (close to Tc) of their irreversibility line. We studied irreversible properties of the films by measuring the hysteresis of nonresonant microwave absorption. The results have revealed the shift of irreversibility line towards low-temperatures and magnetic fields. The effect is most significant for the films irradiated with large doses,...In the present work we report the results of studying the influence of the uranium-ion irradiation of the Bi2Sr2CaCu2O8 thin films on the high-temperature part (close to Tc) of their irreversibility line. We studied irreversible properties of the films by measuring the hysteresis of nonresonant microwave absorption. The results have revealed the shift of irreversibility line towards low-temperatures and magnetic fields. The effect is most significant for the films irradiated with large doses, B?>1 T. This fact is in good agreement with the theoretical prediction by Koshelev and Vinokur of suppression of surface-barrier by columnar defects.» weiterlesen» einklappen

Autoren

Klassifikation

DFG Fachgebiet:
Physik der kondensierten Materie

DDC Sachgruppe:
Physik