First principles study on structural and magnetic properties of small and pure carbon clusters (C(n), n = 2 − 12)
محل انتشار: فصلنامه فیزیک تئوری و کاربردی، دوره: 8، شماره: 4
سال انتشار: 1393
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 348
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شناسه ملی سند علمی:
JR_JTAP-8-4_007
تاریخ نمایه سازی: 27 مرداد 1397
چکیده مقاله:
We have demonstrated the structural and magnetic properties of small carbon clusters (C(n), n = 2 − 12) in theframework of collinear approximation using density functional theory. The calculations were performed foramorphous, linear, and ring carbon clusters using full-potential local-orbital (FPLO) method. We have obtained stablestructures, total energies, total magnetic moments, and HOMO-LUMO energy gap of these clusters. We have foundthat the amorphous carbon clusters with minimum energy are not magnetic clusters whereas their less-stableisomers with special configurations are ferromagnetic objects. Two robust magnetic moments were found for C5carbon ring and for pentagonal pyramid C6 structure.
کلیدواژه ها:
نویسندگان
Mahdi Afshar
Department of Physics, Iran University of Science and Technology, Narmak, Tehran ۱۶۳۴۵, Iran
Mahboobeh Babaei
Department of Physics, Iran University of Science and Technology, Narmak, Tehran ۱۶۳۴۵, Iran
Amir Hossein Kordbacheh
Department of Physics, Iran University of Science and Technology, Narmak, Tehran ۱۶۳۴۵, Iran