کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1816802 1525271 2006 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Anisotropy and two-gap contributions to flux lattice in MgB2 superconductor and Mg1-xAlxB2 alloys
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Anisotropy and two-gap contributions to flux lattice in MgB2 superconductor and Mg1-xAlxB2 alloys
چکیده انگلیسی
We present transverse field μSR measurements of the flux lattice field distribution in dense pellets of MgB2 and of the alloy Mg1-xAlxB2. In the present work we focus on the analysis of the data, comparing the second moment of the calculated and experimental field distributions. Starting from the standard model, we modified the calculation to include the presence of two length scales, the diffusion lengths of the σ and π pairs. We further introduce a partially anisotropic single gap model, adapted to the electronic structure of MgB2, and a partially anisotropic two-band model. We confirm that the two distinct gaps can better describe the field dependence of the data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volumes 374–375, 31 March 2006, Pages 235-238
نویسندگان
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