کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1593149 1002687 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electronic transport properties of zigzag carbon- and boron-nitride-nanotube heterostructures
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Electronic transport properties of zigzag carbon- and boron-nitride-nanotube heterostructures
چکیده انگلیسی

Using first-principles density functional theory and non-equilibrium Green's function formalism for quantum transport calculation, we have investigated the electronic transport properties of heteronanotubes by joining a zigzag (6,0) carbon nanotube and a zigzag (6,0) boron nitride nanotube with different atomic compositions and joint configurations. Our results show that the atomic composition and joint configuration affect strongly the electronic transport properties. Obvious negative differential resistance behavior and large rectifying behavior are obtained in the heterostructure with certain composition and joint configuration. Moreover, tube length and tube radius can affect strongly the observed NDR and rectifying behaviors. The observed negative differential resistance and rectifying behaviors are explained in terms of the evolution of the transmission spectrum with applied bias combined with molecular projected self-consistent Hamiltonian states analysis.


► Transport properties of heteronanotubes based on zigzag C- and BN-nanotubes are studied.
► Atomic composition and joint configuration affect strongly the transport properties.
► Obvious NDR and large rectifying behaviors are observed under certain conditions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 152, Issue 12, June 2012, Pages 1061–1066
نویسندگان
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