scholarly journals Quantum transport model for zigzag molybdenum disulfide nanoribbon structures : A full quantum framework

AIP Advances ◽  
2016 ◽  
Vol 6 (8) ◽  
pp. 085123 ◽  
Author(s):  
Chun-Nan Chen ◽  
Feng-Lin Shyu ◽  
Hsien-Ching Chung ◽  
Chiun-Yan Lin ◽  
Jhao-Ying Wu
Keyword(s):  
Molybdenum Disulfide ◽  
Quantum Transport ◽  
Transport Model ◽  
Full Quantum ◽  
Quantum Framework

Atomistic full-quantum transport model for zigzag graphene nanoribbon-based structures: Complex energy-band method

2018 ◽  
Vol 32 (01) ◽  
pp. 1750355
Author(s):  
Chun-Nan Chen ◽  
Win-Jet Luo ◽  
Feng-Lin Shyu ◽  
Hsien-Ching Chung ◽  
Chiun-Yan Lin ◽  
...  
Keyword(s):  
Quantum Transport ◽  
Energy Band ◽  
Transport Model ◽  
Graphene Nanoribbon ◽  
Quantum Model ◽  
Complex Energy ◽  
Mathematical Expressions ◽  
Band Method ◽  
Transport Problems ◽  
Full Quantum

Using a non-equilibrium Green’s function framework in combination with the complex energy-band method, an atomistic full-quantum model for solving quantum transport problems for a zigzag-edge graphene nanoribbon (zGNR) structure is proposed. For transport calculations, the mathematical expressions from the theory for zGNR-based device structures are derived in detail. The transport properties of zGNR-based devices are calculated and studied in detail using the proposed method.

scholarly journals Explicit screening full band quantum transport model for semiconductor nanodevices

2018 ◽  
Vol 123 (24) ◽  
pp. 244501 ◽  
Author(s):  
Yuanchen Chu ◽  
Prasad Sarangapani ◽  
James Charles ◽  
Gerhard Klimeck ◽  
Tillmann Kubis
Keyword(s):  
Quantum Transport ◽  
Transport Model ◽  
Full Band ◽  
Semiconductor Nanodevices

scholarly journals Stationary states of weak coupling limit-type Markov generators and quantum transport models

2020 ◽  
Vol 23 (01) ◽  
pp. 2050003
Author(s):  
A. Hernández-Cervantes ◽  
R. Quezada
Keyword(s):  
Quantum Transport ◽  
Weak Coupling ◽  
Energy Transport ◽  
Transport Model ◽  
Weak Coupling Limit ◽  
Stationary States ◽  
Transport Models ◽  
Markov Generator ◽  
Kraus Operators ◽  
Creation Operators

We prove that every stationary state in the annihilator of all Kraus operators of a weak coupling limit-type Markov generator consists of two pieces, one of them supported on the interaction-free subspace and the second one on its orthogonal complement. In particular, we apply the previous result to describe in detail the structure of a slightly modified quantum transport model due to Arefeva et al. (modified AKV’s model) studied first in [J. C. García et al., Entangled and dark stationary states of excitation energy transport models in many-particles systems and photosynthesis, Infin. Dimens. Anal. Quantum Probab. Relat. Top. 21(3) (2018), Article ID: 1850018, p. 21, doi:10.1142/S0219025718500182], in terms of generalized annihilation and creation operators.

QUANTUM TRANSPORT IN SEMICONDUCTOR SUPERLATTICES BEYOND THE KADANOFF–BAYM ANSATZ

2001 ◽  
Vol 15 (31) ◽  
pp. 4123-4143 ◽  
Author(s):  
P. KLEINERT ◽  
V. V. BRYKSIN
Keyword(s):  
Distribution Function ◽  
Quantum Transport ◽  
Transport Model ◽  
Kinetic Equations ◽  
Nonlinear Transport ◽  
Carrier Distribution ◽  
Semiconductor Superlattices ◽  
Symmetry Properties ◽  
Scattering Strength ◽  
Green Function Approach

Quantum transport in semiconductor superlattices subject to quantizing parallel electric and magnetic fields is studied based on the Kadanoff–Baym–Keldysh double-time Green function approach. Exploiting the symmetry properties of the underlying Hamiltonian, coupled kinetic equations are derived and analytically solved for the density-of-states and the carrier distribution function. Scattering giving rise to collisional broadening plays an important role in our transport model, whose unperturbed eigenstates are completely discrete due to Wannier–Stark and Landau quantization. It is shown that a correct description of the stationary quantum transport in superlattices with field-induced localized eigenstates requires the determination of a time-dependent distribution function from a kinetic equation, which emerges beyond the Kadanoff–Baym Ansatz. Depending on the scattering strength, gaps are predicted to occur in the electric and magnetic field dependence of the current density. The rigorous quantum-mechanical approach reveals the hopping nature of the nonlinear transport in narrow miniband superlattices. This is compared with results obtained recently within the density-matrix approach.

Effect of molybdenum disulfide nanoribbon on quantum transport of graphene

2017 ◽  
Vol 29 (43) ◽  
pp. 435001 ◽  
Author(s):  
Guanyi Gao ◽  
Zhongyao Li ◽  
Mingyan Chen ◽  
Yiqun Xie ◽  
Yin Wang
Keyword(s):  
Molybdenum Disulfide ◽  
Quantum Transport
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