کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1820012 1026078 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nodes in an alternatively defined order parameter in HTSC
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Nodes in an alternatively defined order parameter in HTSC
چکیده انگلیسی
In a previous study the BCS wave function was generalized to include the motion of the center-of-mass of Cooper pairs. It was found that the Ginsburg-Landau order parameter could be identified with a wave function describing this motion. Here attention is focussed on the effects of replacing free electron orbitals by Bloch waves. In the copper oxides, where the Fermi surface lies contiguous to the Brillouin zone boundary, and with pairs coupled by soft phonon modes, limitations on the wave vectors associated with the center-of-mass coordinates are found. These limitations lead to nodes in the Fourier transform of the Ginsburg-Landau order parameter. Possible relevance of the nodes to the more recently discovered properties of high TC superconductors is discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volume 468, Issue 21, 1 October 2008, Pages 2201-2207
نویسندگان
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