کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8163925 | 1525665 | 2018 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electron-phonon interaction in the binary superconductor lutetium carbide LuC2 via first-principles calculations
ترجمه فارسی عنوان
تعامل الکترون-فونون در کاربید لوتیسیت دوتایی ابررسانا با استفاده از محاسبات اولیه
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
چکیده انگلیسی
Structural, electronic, electron-phonon coupling and superconducting properties of the intermetallic compound LuC2 are investigated by means of ab initio pseudopotential plane wave method within the generalized gradient approximation. The calculated equilibrium lattice parameters yielded a very good accord with experiment. There is no imaginary phonon frequency in the whole Brillouin zone supporting thus the dynamical stability in the material of interest. The average electron-phonon coupling parameter is found to be 0.59 indicating thus a weak-coupling BCS superconductor. Using a reasonable value of μ*â¯=â¯0.12 for the effective Coulomb repulsion parameter, the superconducting critical temperature Tc is found to be 3.324 which is in excellent agreement with the experimental value of 3.33â¯K. The effect of the spin-orbit coupling on the superconducting properties of the material of interest has been examined and found to be weak.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity and its Applications - Volume 549, 15 June 2018, Pages 131-138
Journal: Physica C: Superconductivity and its Applications - Volume 549, 15 June 2018, Pages 131-138
نویسندگان
S. Dilmi, S. Saib, N. Bouarissa,