کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1820274 | 1525775 | 2007 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Superconducting state parameters of CuxZr100âx binary metallic glasses
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
The screening dependence investigations of the superconducting state parameters (SSP) viz., electron-phonon coupling strength λ, Coulomb pseudopotential μâ, transition temperature TC, isotope effect exponent α and effective interaction strength NOV of 10 binary CuxZr100âx (x = 0.25, 0.30, 0.33, 0.35, 0.40, 0.45, 0.50, 0.55, 0.57 and 0.60) metallic glasses have been reported using Ashcroft's empty core (EMC) model potential. Five local field correction functions proposed by Hartree (H), Taylor (T), Ichimaru-Utsumi (IU), Farid et al. (F) and Sarkar et al. (S) are used in the present investigation to study the screening influence on the aforesaid properties. It is observed that the electron-phonon coupling strength λ and the transition temperature TC are quite sensitive to the selection of the local field correction functions, whereas, the Coulomb pseudopotential μâ, isotope effect exponent α and effective interaction strength NOV show weak dependences on the local field correction functions. The TC obtained from IU-local field correction function are found an excellent agreement with available theoretical or experimental data and show almost linear nature with the concentration 'x' of Cu element. A linear TC equation is proposed by fitting the present outcomes for IU-local field correction function, which is in conformity with other results for the experimental data. Also, the present results are found in qualitative agreement with other such earlier reported data, which confirms the superconducting phase in the metallic glasses.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volume 458, Issues 1â2, 1 July 2007, Pages 43-50
Journal: Physica C: Superconductivity - Volume 458, Issues 1â2, 1 July 2007, Pages 43-50
نویسندگان
Aditya M. Vora,