کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9868101 | 1530680 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Renormalization of magnetic fluctuations and the in-plane resistivity curvature in the normal state of cuprate superconductors
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Renormalization of magnetic fluctuations and the in-plane resistivity curvature in the normal state of cuprate superconductors Renormalization of magnetic fluctuations and the in-plane resistivity curvature in the normal state of cuprate superconductors](/preview/png/9868101.png)
چکیده انگلیسی
The temperature dependence of the resistivity Ï(T) in two-dimensional doped antiferromagnet is investigated for different forms of the dynamical spin susceptibility Ï(q,Ï) taking into account the sum rule: for a mean-field form Ïmf(q,Ï), which allows for the spin mode damping γ and the renormalization of a mean-field spectrum Ïq,mf and for a so-called strongly overdamped form Ïso(q,Ï). Doped cuprates are discussed within the single band Kondo lattice model. A strong temperature-dependent scattering anisotropy in the kinetic equation for the carrier distribution function is treated through the density matrix formalism in seven-moment approach. Obtained Ï(T) dependence demonstrates qualitative agreement with experimental data for optimally doped high temperature superconductors. It is found that an damping increase leads to the change of the Ï(T) positive curvature to a liner law of Ï(T) dependence, the use of the strongly overdamped form Ïso(q,Ï) leads to the curvature sign change from a positive one to negative. A spin gap temperature dependence and a renormalization of a mean-field spectrum Ïq,mf are of crucial importance for the behavior of Ï(T).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 341, Issues 1â4, 20 June 2005, Pages 261-270
Journal: Physics Letters A - Volume 341, Issues 1â4, 20 June 2005, Pages 261-270
نویسندگان
A.F. Barabanov, A.M. Belemuk,