کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1819230 | 1525763 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Coexistence of superconductivity and ferromagnetism in hybrid rutheno-cuprate superconductors RuSr2RCu2O8
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Coexistence of superconductivity and ferromagnetism in hybrid rutheno-cuprate superconductors RuSr2RCu2O8 Coexistence of superconductivity and ferromagnetism in hybrid rutheno-cuprate superconductors RuSr2RCu2O8](/preview/png/1819230.png)
چکیده انگلیسی
I consider the extended two-band s-f model with additional terms, describing inter-site Cooper pairs interaction between two-subsystems s and f, respectively. Following Green's function technique and equation of motion method self-consistent equations for superconducting order parameter (Î) and magnetic order parameter (mf) are derived. The expressions for specific heat, density of states, and free energy are also derived. The theory has been applied to explain the coexistence of superconductivity and ferromagnetism in hybrid rutheno-cuprate superconductors RuSr2RECu2O8 (REÂ =Â Gd, Eu). The theory shows that it is possible to become superconducting via a second order phase transition if the system is already ferromagnetic. The agreement between theory and experimental observations is quite satisfactory.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volume 469, Issues 7â8, 1 April 2009, Pages 283-287
Journal: Physica C: Superconductivity - Volume 469, Issues 7â8, 1 April 2009, Pages 283-287
نویسندگان
R.S. Meghwal,