کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10714390 | 1025587 | 2011 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetotransport in a graphene monolayer with two tunable magnetic barriers
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Magnetotransport in a graphene monolayer with two tunable magnetic barriers Magnetotransport in a graphene monolayer with two tunable magnetic barriers](/preview/png/10714390.png)
چکیده انگلیسی
The magnetotransport property for a monolayer graphene with two turnable magnetic barriers has been investigated by the transfer-matrix method. We show that the parameters of barrier height, width, and interval between two barriers affect the electron wave decaying length, which determine the conductance with parallel or antiparallel magnetization configuration, and consequently the tunneling magnetoresistance (TMR) for the system. Interestingly, a graphene attached by two barriers with different heights can produce a resonant TMR peak at low energy region one order of magnitude larger than that for the system with two same height barriers because that the asymmetry of magnetic barriers block the electron transmission in the case of antiparallel magnetization configuration. The results obtained here may be useful in understanding of electron tunneling in graphene and in designing of graphene-based nanodevices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 406, Issue 23, 1 December 2011, Pages 4407-4411
Journal: Physica B: Condensed Matter - Volume 406, Issue 23, 1 December 2011, Pages 4407-4411
نویسندگان
Haiyan Wang, Xiongwen Chen, Benhu Zhou, Wenhu Liao, Guanghui Zhou,