کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1819314 1525761 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reduction dependence of superconductivity in the end-member T′ cuprates
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Reduction dependence of superconductivity in the end-member T′ cuprates
چکیده انگلیسی

We have recently achieved superconductivity in T′-RE2CuO4 (RE: Pr, Nd, Sm, Eu, and Gd), using epitaxial thin films by metal organic decomposition. The key recipes to achieve superconductivity are low-PO2 firing and subsequent vacuum reduction to minimize the amount of impurity oxygen atoms, which are very harmful to high-Tc superconductivity. In this article, we report our investigation on the reduction dependence of superconductivity of T′-RE2CuO4. For thin films, the amount of remnant Oap atoms is difficult to evaluate but we propose that one good measure for this may be the c-axis lattice constant, which tells us whether the reduction is insufficient or excessive.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volume 469, Issues 15–20, 15 October 2009, Pages 940–943
نویسندگان
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