Transport properties, phase transition, and recovery near 200 K of proton-irradiated YBa2Cu3O7thin films

1988/07/01 by G. C. Xiong, H. C. Li, G. Linker +1 · 1 citation
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Electronic and Structural Properties of Oxides #Physics of Superconductivity and Magnetism

paper · doi:10.1103/physrevb.38.240

openalex publication_date 1988/07/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/06/26

Abstract

Irradiation of thin YBa₂Cu₃O₇ films with protons at 4.2 and 77 K causes distinct changes of the resistivity \ensuremathρ₀, T_c, the transition width \ensuremathδT_c, and the formation of new phases in different fluence regions. At low fluences, T_c and \ensuremathδT_c are not affected, while \ensuremathρ₀ and the thermal part of the resistivity, \ensuremathρ_th, increase. This behavior is quite different from that of previous "high-T_c" superconductors. At large fluences, a semiconducting phase developed, revealing a dose-dependent activation energy. About 60% of the irradiation-induced changes recover during annealing above 200 K.

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