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Effect of Ion-beam Radiation on the Anisotropy of Resistivity in YBa 2 Cu 3 O 7-δ Thin Films

  • J. Z. Wu (a1), Z. H. Zhang (a2), V. W. Chen (a2), N. Yu (a3) and W. K. Chu (a2)...


Different behaviors of the normal-state resistivity have been observed in (110)-, (113)- and a-oriented YBa2Cu3O7-δ thin films under 200 keV H+ irradiation. It suggests that the c-axis electrical conduction is very sensitive to nonoxygen point defects and a ”semiconductor-metal” phase transition could be induced at very low densities of these defects.



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