کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10642397 | 997653 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Properties of charge and magnetic impurities in a spin-polarized electron gas: A semiclassical approach
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Properties of charge and magnetic impurities in a spin-polarized electron gas: A semiclassical approach Properties of charge and magnetic impurities in a spin-polarized electron gas: A semiclassical approach](/preview/png/10642397.png)
چکیده انگلیسی
Analytical studies on the effect of charge and magnetic impurities in a spin-polarized electron gas (SPEG) are carried out using a Thomas-Fermi semiclassical approximation (TFSA). The susceptibility matrix of an SPEG is calculated within the TFSA framework. Charge, spin and mixed charge-spin screening lengths are defined and calculated for the bulk metals (Fe, Co and Ni). It is found that these screening lengths do not strongly depend on temperature in metallic samples. Based on the Ruderman-Kittel-Kasuya-Yoshida (RKKY) model, the magnetic response function is then used to calculate the dependence of the exchange coupling between two ferromagnetic layers. It is seen that the exchange coupling as a function of the magnetic/non-magnetic spacer thickness shows oscillatory behaviors for different orientations of the crystallographic planes in agreement with available experimental results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 28, Issue 3, August 2005, Pages 313-322
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 28, Issue 3, August 2005, Pages 313-322
نویسندگان
Ali A. Shokri, K. Esfarjani,