Metallic behavior and negative differential resistance properties of (InAs)n(n = 2 − 4) molecule cluster junctionsviaa combined non–equilibrium Green's function and density functional theory study

2014 ◽  
Vol 115 (23) ◽  
pp. 233712 ◽  
Author(s):  
Qi Wang ◽  
Jianbing Zhang ◽  
Rong Li ◽  
Yuanlan Xu ◽  
Xiangshui Miao ◽  
...  
Nanoscale ◽  
2014 ◽  
Vol 6 (19) ◽  
pp. 11121-11129 ◽  
Author(s):  
Ming-Xing Zhai ◽  
Xue-Feng Wang ◽  
P. Vasilopoulos ◽  
Yu-Shen Liu ◽  
Yao-Jun Dong ◽  
...  

We investigate the spin-dependent electric and thermoelectric properties of ferromagnetic zigzag α-graphyne nanoribbons (ZαGNRs) using density-functional theory combined with non-equilibrium Green's function method.


2016 ◽  
Vol 18 (6) ◽  
pp. 4333-4344
Author(s):  
Cuicui Sun ◽  
Guiling Zhang ◽  
Yan Shang ◽  
Zhao-Di Yang ◽  
Xiaojun Sun

Electronic structures and transport properties of prototype MoS2 nanotube (15, 0) nanocables, including undoped PSi@MoS2 and B- and P-doped PSi@MoS2 (where PSi refers to polysilane), are investigated using the density functional theory (DFT) and the non-equilibrium Green's function (NEGF) methods.


RSC Advances ◽  
2016 ◽  
Vol 6 (88) ◽  
pp. 84978-84984 ◽  
Author(s):  
Fang Xie ◽  
Zhi-Qiang Fan ◽  
Xiao-Jiao Zhang ◽  
Jian-Ping Liu ◽  
Hai-Yan Wang ◽  
...  

We investigate the electronic transport properties of a single cruciform diamine molecule connected to zigzag graphene nanoribbon electrodes by using the non-equilibrium Green's function formalism with density functional theory.


2018 ◽  
Vol 32 (32) ◽  
pp. 1850395
Author(s):  
Baoan Bian ◽  
Jingjuan Yang ◽  
Xiaoxiao Han ◽  
Peipei Yuan ◽  
Yuqiang Ding

We investigate the effect of changed BN nanoribbon on the rectifying behavior in zigzag graphene/BN nanoribbon heterojunction using first principles based on non-equilibrium Green’s function and density functional theory. The increased BN length in the scattering region reduces the rectifying performance of the device, and the maximum rectifying ratio is [Formula: see text] in the heterojunction. We discuss the different rectifying characteristics for the designed models by calculating the transmission spectra at different biases. The rectifying phenomenon is further investigated by the projected density of state of device. Furthermore, we explain the observed negative differential resistance effect by the transmission spectra and transmission eigenstates. The results suggest that the zigzag graphene/BN nanoribbon heterojunction leads to the asymmetric current, causing the rectifying phenomenon, and the BN length in the scattering region can modulate the rectifying performance of zigzag graphene/BN nanoribbon heterojunction.


RSC Advances ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 1400-1409 ◽  
Author(s):  
L. Sun ◽  
Z. H. Zhang ◽  
H. Wang ◽  
M. Li

Using the first-principles method based on density-functional theory and non-equilibrium Green's function, the electronic properties of zigzag ZPNRs terminated with NM atoms, as well as a pristine case, were studied systematically.


RSC Advances ◽  
2016 ◽  
Vol 6 (18) ◽  
pp. 15008-15015 ◽  
Author(s):  
Dan Zhang ◽  
Mengqiu Long ◽  
Xiaojiao Zhang ◽  
Jun Ouyang ◽  
Hui Xu ◽  
...  

Using the non-equilibrium Green's function method and spin-polarized density functional theory, we investigate the stability and spin-resolved transport properties of zigzag α-graphyne nanoribbons with symmetric and asymmetric edge fluorinations.


2014 ◽  
Vol 2 (46) ◽  
pp. 10017-10030 ◽  
Author(s):  
Guiling Zhang ◽  
Sun Peng ◽  
Yan Shang ◽  
Zhao-Di Yang ◽  
Xiao Cheng Zeng

Electronic and transport properties of novel ferrocene based carbon nanotube (CNT) and boron-nitride nanotube (BNNT) nanopeapods, including Fe(Cp)2@CNT, Fe2(Cp)3@CNT, Fe(Cp)2@BNNT, and Fe2(Cp)3@BNNT (where Cp refers as cyclopentadiene), are investigated using the density functional theory and non-equilibrium Green's function methods.


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