کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8202991 | 1530502 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Multiple spin-resolved negative differential resistance and electrically controlled spin-polarization in transition metal-doped [6]cycloparaphenylenes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In structure, a [n]cycloparaphenylene ([n]CPP) molecule is constructed by fully conjugated bent benzenes, i.e., hexangular rings. Based on first-principles calculations, the spin-dependent electronic transport of transition metal-doped CPP, X@[6]cycloparaphenylene (X@[6]CPP) (Xâ¯=â¯Fe, Co and Ni), contacted with Au electrodes is investigated. (Multiple) negative differential resistance (NDR) is observed for all the doping cases, suggesting it is the intrinsic feature of such systems. Due to the spin dependence of the NDR, electrical switch of the direction of spin polarization for a current is realized. Further analysis shows that it is the suppression of the transmission peaks around the Fermi level as the bias increases that results in the NDR. The suppression is caused by the decay of the local density of states on the scattering region. As electrically controlled spin polarization is a promising area in nanoelectronics, we believe our results would be quite beneficial to the development of spintronic devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 382, Issue 38, 29 September 2018, Pages 2763-2768
Journal: Physics Letters A - Volume 382, Issue 38, 29 September 2018, Pages 2763-2768
نویسندگان
Yan-Dong Guo, Hong-Li Zeng, Li-Zhi Hu, Xiao-Hong Yan, Xin-Yi Mou, Mou-Shu Yang,