کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1625806 1516430 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Self-irradiation damage and 5f localization in PuCoGa5
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Self-irradiation damage and 5f localization in PuCoGa5
چکیده انگلیسی
Understanding superconductivity in PuCoGa5 presents several challenges due to the presence of local moments and self-irradiation damage. We present X-ray absorption fine-structure measurements that further establish the presence of local 5f-electrons. Moreover, these data indicate even stronger localization after the PuCoGa5 sample has aged, indicating a possible mixed valent ground state of the Pu atoms. Local structure measurements on this aged sample show an astonishing amount of damage, approximately 40% of the material after about 2 years. This amount of damage indicates that distortions around the Frenkel defects extend beyond the nearest-neighbor, and is qualitatively consistent with a percolation model for the destruction of the superconducting state after sufficient damage has accumulated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volumes 444–445, 11 October 2007, Pages 119-123
نویسندگان
, , , , , , , , ,