کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5349243 | 1388098 | 2018 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Modulation of spatial spin polarization at organic spinterface by side groups
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
Spin polarization at benzene/Ni organic/ferromagnetic interface is investigated by applying different substituting side groups. Based on first-principle calculations, it is demonstrated that the spin polarization of the states may be tuned in magnitude and sign by the side groups, which depends on the type of side groups as well as their position in the aromatic ring. Especially, a spatial spin polarization modulation is realized at the surface with the utilization of electron donating group NH2 or electron accepting group NO2. The analysis of projected density of states onto the pz orbital of carbon atoms indicates that the side group reduces the structural symmetry of the molecule and changes the pz orbital of carbon atom at different position, which further modifies the pz-d orbital hybridization as well as the spin transfer between the molecule and the ferromagnet. This work indicates a feasible way to modulate the spatial spin polarization at organic spinterface by side groups, which deserves to be measured by spin-polarized scanning tunneling microscopy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 427, Part B, 1 January 2018, Pages 416-420
Journal: Applied Surface Science - Volume 427, Part B, 1 January 2018, Pages 416-420
نویسندگان
Shuai Qiu, Zhao Zhang, Yuan-yuan Miao, Guang-ping Zhang, Jun-feng Ren, Chuan-kui Wang, Gui-chao Hu,