کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9816874 | 1518375 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electronic transport property of 4,4â²-bipyridine molecular junction
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Electronic transport property of 4,4â²-bipyridine molecular junction Electronic transport property of 4,4â²-bipyridine molecular junction](/preview/png/9816874.png)
چکیده انگلیسی
The electronic transport properties of a single 4,4â²-bipyridine molecule sandwiched between two gold electrodes are studied by using first-principles non-equilibrium Green's function method. The theoretical results show that the relative position of the lowest unoccupied molecular orbital lies close to the Fermi level, and shifts away by applying voltage bias. The transmission of the molecular junction is almost contributed by a single conductance channel at small bias. The conductance behavior of the 4,4â²-bipyridine junction is metallic. The current does not change significantly by varying the distance of Au-N slightly and is found to be linear at small bias. Theoretical results reproduce the main features of the experimental current-voltage characteristics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultramicroscopy - Volume 105, Issues 1â4, November 2005, Pages 293-298
Journal: Ultramicroscopy - Volume 105, Issues 1â4, November 2005, Pages 293-298
نویسندگان
Qunxiang Li, Xiaojun Wu, Jing Huang, Jinlong Yang,