کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1866181 | 1037935 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
First-principles calculations for magnetic properties of Mn-doped GaN nanotubes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
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چکیده انگلیسی
Based on first-principles spin-density functional calculations, we investigate the electronic and magnetic properties of Mn-doped GaN nanotubes in which two of Ga atoms are substituted by Mn atoms. Similar to the case of Mn in bulk GaN, our calculations show that Mn atoms also act as an acceptor and all of the ground states for the Mn-doped GaNNTs are ferromagnetic. Moreover, the ferromagnetism is isotropic and independent of the chirality and diameter of the nanotubes. It is found that the most favorable configuration is the first-nearest neighbor Mn model, which is mainly mediated by both the hole–hole interaction and the dipole–dipole interaction.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 372, Issue 15, 7 April 2008, Pages 2688–2691
Journal: Physics Letters A - Volume 372, Issue 15, 7 April 2008, Pages 2688–2691
نویسندگان
Yanhua Guo, Mingxing Chen, Zhaohui Guo, Xiaohong Yan,