کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5496607 | 1399859 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Long range ferromagnetism in (Zn, Mn, Li)Se with competition between double exchange and p-d exchange
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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: Long range ferromagnetism in (Zn, Mn, Li)Se with competition between double exchange and p-d exchange Long range ferromagnetism in (Zn, Mn, Li)Se with competition between double exchange and p-d exchange](/preview/png/5496607.png)
چکیده انگلیسی
In this paper, we elucidate the mechanism for Li co-dopant induced enhancement of the ferromagnetism in 2Ã2Ã2 and 3Ã3Ã3 cubic (Zn, Mn)Se using density functional calculations. The doping atoms tend to congregate together according to the ferromagnetic (FM) energy. All configurations are strongly FM ones due to double exchange (DE) and p-d exchange (PE). DE and PE are shown in the partial density of states. The hole is uniformly distributed in the cubic (Zn, Mn, Li)Se, and it is the one and only parameter to decide the exchange energy, when impurity atoms stay further away from each other. The average exchange energy of these configurations is considered to be a function of the square root of the hole concentration. The fitting data to a polynomial function shows that DE and PE have roles of similar importance in the exchange energy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 381, Issue 13, 4 April 2017, Pages 1169-1173
Journal: Physics Letters A - Volume 381, Issue 13, 4 April 2017, Pages 1169-1173
نویسندگان
Y. Zhu, T. Liu, X.Y. Zhang, Y.F. Pan, X.Y. Wei, C.L. Ma, D.N. Shi, J.Y. Fan,