Quantum Transport of Edge States in Zigzag Graphene NanoRibbon in the Presence of an Abrupt Structure Change due to Missing Atoms

2020 ◽  
Author(s):  
Nazmul Amin ◽  
Mahbub Alam
Keyword(s):  
Quantum Transport ◽  
Structure Change ◽  
Graphene Nanoribbon ◽  
Edge States

scholarly journals Quantum transport in zigzag graphene nanoribbon decorated with a phenanthrene molecule

2021 ◽  
Author(s):  
Bo Jiang ◽  
Qing-Yuan Chen ◽  
Jinlong Luo ◽  
Yifen Zhao ◽  
GuoJun Jin ◽  
...  
Keyword(s):  
Quantum Transport ◽  
Density Functional ◽  
Physical Mechanism ◽  
Differential Resistance ◽  
Graphene Nanoribbon ◽  
Hybrid Structures ◽  
Differential Conductance ◽  
First Principles Calculations ◽  
Functional Theory ◽  
Carbon Chains

Abstract By using the first principles calculations which combine density functional theory and nonequilibrium Green's function, we investigate the nanoscopic quantum transport of three hybrid structures consisting of a phenanthrene (PHE) molecule and a zigzag graphene nanoribbon (ZGNR). It is found that after decorated with the PHE molecule, the ZGNRs with the odd (even) zigzag carbon chains show the conductance reduction (enhancement), respectively. With the increase of the number of carbon chains, this odd-even difference will disappear. Moreover, negative differential resistance behavior can also be found in the hybrid structures consisting of the PHE molecule and the antisymmetric ZGNR. Finally, the differential conductance, transmission spectra, and molecular projection self-consistent Hamiltonian are used to explain the physical mechanism clearly. Accordingly, the proposed structures could have broad applications in the design of molecular nanodevices.

Quantum Transport Mode in Graphene Nanoribbon Based Transistor

2017 ◽  
Vol 12 (9) ◽  
pp. 886-890
Author(s):  
Sayed Norollah Hedayat ◽  
Mohammad Taghi Ahmadi ◽  
Hassan Sedghi ◽  
Hadi Goudarzi ◽  
Shahram Moradi
Keyword(s):  
Quantum Transport ◽  
Graphene Nanoribbon ◽  
Transport Mode
Sign in / Sign up

Export Citation Format

Share Document