کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1819227 1525763 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Correlation between structural and superconducting properties of nano-granular disordered Nb thin films
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Correlation between structural and superconducting properties of nano-granular disordered Nb thin films
چکیده انگلیسی

We report on low temperature transport measurements on nano-granular Nb thin films deposited on Si (1 0 0) substrates using DC magnetron sputtering. The superconducting transition temperature (Tc) is found to decrease monotonically with the increase of the lattice parameter (a) irrespective of its thickness and grain size. The superconducting transition temperature is found to depend only on the lattice parameter whereas the normal state resistivity depends both on lattice parameter and the details of the sample morphology. We have modeled this Tc variation with lattice expansion in terms of Debye temperature reduction using Morse potential as the interatomic potential in Nb.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volume 469, Issues 7–8, 1 April 2009, Pages 268–272
نویسندگان
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