Effect of electron irradiation and Pr doping on the charge transport in YBCO single crystals
The influence of irradiation by electrons with energies of 0.5 … 2.5 MeV at temperatures of about 10 K on the basal-plane resistivity of the YBa2Cu3O7−δ single crystals is investigated in the range from Tc to 300 K. The resistivity temperature dependence is determined by defects arising due to the i...
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Published in: | Solid state communications 2018-10, Vol.282, p.5-8 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | The influence of irradiation by electrons with energies of 0.5 … 2.5 MeV at temperatures of about 10 K on the basal-plane resistivity of the YBa2Cu3O7−δ single crystals is investigated in the range from Tc to 300 K. The resistivity temperature dependence is determined by defects arising due to the irradiation. These defects directly affect the superconducting transition, decreasing Tc and increasing the transition width without significant distortions of its shape. The resulting defects also lead to an increase in the Debye temperature due to a reduction of the anisotropy, and a noticeable increase in the scattering by phonons in the sample. The excess conductivity does not change with the irradiation used.
•The effect of electron irradiation of YBCO single crystals is investigated in comparison with that of Pr doping.•Only a part of the irradiation-induced defects affect the superconducting transition.•The excess conductivity is not affected by the 0.5 … 2.5 MeV electron irradiation. |
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ISSN: | 0038-1098 1879-2766 |
DOI: | 10.1016/j.ssc.2018.07.005 |