کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5496933 | 1399875 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Half-metallicity in hole-doped nitrogenated honey graphene: A first-principles study
ترجمه فارسی عنوان
نیمه فلزی در گرافن عسل نیتروژنه سوراخ دار: یک مطالعه اولیه
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کلمات کلیدی
نیمی از فلز، فرومغناطیس، انتقال فاز،
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
چکیده انگلیسی
We have investigated the structural, electronic and magnetic properties of hole-doped nitrogenated honey graphene by first-principles calculations. Remarkably, there exists a stable half-metallic ferromagnetism phase with the average spin magnetic moment per carrier of near 1.0 μB in this monolayer system as the carrier density increases from 0 to 1.5Ã1014 cmâ2. With further increase of carrier density, the half-metal state vanishes, while the magnetic state remains until the carrier density reaches 4.5Ã1014 cmâ2. Our analysis reveals that the predicted itinerant magnetism arises from an exchange splitting of the electronic states at the top of the valence band, where the density of states shows a van Hove singularity. In addition, we have also studied the electron-doped nitrogenated honey graphene, and find the magnetic features are similar to those of the hole-doped system. As synthesis of monolayer nitrogenated honey graphene was reported, half-metallicity of nitrogenated honey graphene are feasible.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 381, Issue 12, 26 March 2017, Pages 1097-1101
Journal: Physics Letters A - Volume 381, Issue 12, 26 March 2017, Pages 1097-1101
نویسندگان
Jingzhong Zhu, Yinchang Zhao, Shuming Zeng, Jun Ni,