Reprint of : Shot noise fluctuations in disordered graphene nanoribbons near the Dirac point

2016 ◽  
Vol 82 ◽  
pp. 79-84 ◽  
Author(s):  
Víctor A. Gopar
Keyword(s):  
Shot Noise ◽  
Dirac Point ◽  
Graphene Nanoribbons

EFFECTIVE MOBILITY MODEL OF GRAPHENE NANORIBBON IN PARABOLIC BAND ENERGY

2011 ◽  
Vol 25 (10) ◽  
pp. 739-745 ◽  
Author(s):  
N. A. AMIN ◽  
M. T. AHMADI ◽  
Z. JOHARI ◽  
S. M. MOUSAVI ◽  
R. ISMAIL
Keyword(s):  
Experimental Data ◽  
Band Structure ◽  
Transport Properties ◽  
Conventional Method ◽  
Dirac Point ◽  
Graphene Nanoribbons ◽  
Mobility Model ◽  
Band Energy ◽  
One Dimensional ◽  
Effective Mobility

In this letter, we investigate the transport properties of one-dimensional semiconducting Graphene nanoribbons (GNRs) with parabolic band structure near the Dirac point. The analytical model of effective mobility is developed by using the conductance approach, which differs from the conventional method of extracting the effective mobility using the well-known Matthiessen rule. Graphene nanoribbons conductance model developed was applied in the Drude model to obtain the effective mobility, which then gives nearly close comparison with the experimental data.

scholarly journals Shot noise suppression and hopping conduction in graphene nanoribbons

2010 ◽  
Vol 82 (16) ◽  
Author(s):  
R. Danneau ◽  
F. Wu ◽  
M. Y. Tomi ◽  
J. B. Oostinga ◽  
A. F. Morpurgo ◽  
...  
Keyword(s):  
Shot Noise ◽  
Noise Suppression ◽  
Graphene Nanoribbons ◽  
Hopping Conduction ◽  
Shot Noise Suppression

scholarly journals Shot noise probing of magnetic ordering in zigzag graphene nanoribbons

2009 ◽  
Vol 79 (24) ◽  
Author(s):  
Ralitsa L. Dragomirova ◽  
Denis A. Areshkin ◽  
Branislav K. Nikolić
Keyword(s):  
Shot Noise ◽  
Graphene Nanoribbons ◽  
Magnetic Ordering ◽  
Zigzag Graphene Nanoribbons

Voltage-driven electronic transport and shot noise in armchair graphene nanoribbons

2011 ◽  
Vol 375 (27) ◽  
pp. 2670-2675 ◽  
Author(s):  
Jian-Hui Yuan ◽  
Ze Cheng ◽  
Jian-Jun Zhang ◽  
Qi-Jun Zeng ◽  
Jun-Pei Zhang
Keyword(s):  
Shot Noise ◽  
Electronic Transport ◽  
Graphene Nanoribbons ◽  
Armchair Graphene Nanoribbons ◽  
Armchair Graphene

scholarly journals Effects of the contacts on shot noise in graphene nanoribbons

2014 ◽  
Vol 90 (3) ◽  
Author(s):  
A. D. Wiener ◽  
M. Kindermann
Keyword(s):  
Shot Noise ◽  
Graphene Nanoribbons

scholarly journals Shot noise in lithographically patterned graphene nanoribbons

2013 ◽  
Vol 88 (24) ◽  
Author(s):  
Z. B. Tan ◽  
A. Puska ◽  
T. Nieminen ◽  
F. Duerr ◽  
C. Gould ◽  
...  
Keyword(s):  
Shot Noise ◽  
Graphene Nanoribbons

scholarly journals Topological Metal-Insulator Transition in Narrow Graphene Nanoribbons?

2020 ◽  
Author(s):  
Aristides Zdetsis ◽  
Eleftherios Economou
Keyword(s):  
Dirac Point ◽  
Energy Gap ◽  
Graphene Nanoribbons ◽  
Critical Length ◽  
Dimensional System ◽  
Edge States ◽  
Aromatic Rings ◽  
Metal Insulator ◽  
A Value ◽  
Armchair Graphene Nanoribbons

We show that very narrow armchair graphene nanoribbons (AGNRs) of length L and width of 2 zigzag-rings undergo a metal-insulator-like transition at a critical length of 10nm, where the energy gap drops rather abruptly, and the conductivity, estimated, through an invoked computational scheme, rises almost discontinuously to a value between that of a perfect quasi one-dimensional system, and the nominal minimum conductivity of graphene. At this length, the aromatic and non-aromatic rings are interchanged, and sharp peaks appear in the density of states around the Fermi level, suggesting metallic-like behaviour. Such peaks linked to edge states at the Dirac point(s) coincide with the charge-neutrality point(s), associated with the minimum conductivity of graphene. Thus, we have an uncommon combination of interrelated “short-long”, “core-edge,” topological-aromatic transition(s) due to strong quantum confinement, driven by inversion symmetry conflict. The bandgap decreases with the 2/3 power of length before the “transition” and logarithmically afterwards. These effects are practically non-existent for wider AGNRs

scholarly journals Topological Metal-Insulator Transition in Narrow Graphene Nanoribbons?

2020 ◽  
Author(s):  
Aristides Zdetsis ◽  
Eleftherios Economou
Keyword(s):  
Dirac Point ◽  
Energy Gap ◽  
Graphene Nanoribbons ◽  
Critical Length ◽  
Dimensional System ◽  
Edge States ◽  
Aromatic Rings ◽  
Metal Insulator ◽  
A Value ◽  
Armchair Graphene Nanoribbons

We show that very narrow armchair graphene nanoribbons (AGNRs) of length L and width of 2 zigzag-rings undergo a metal-insulator-like transition at a critical length of 10nm, where the energy gap drops rather abruptly, and the conductivity, estimated, through an invoked computational scheme, rises almost discontinuously to a value between that of a perfect quasi one-dimensional system, and the nominal minimum conductivity of graphene. At this length, the aromatic and non-aromatic rings are interchanged, and sharp peaks appear in the density of states around the Fermi level, suggesting metallic-like behaviour. Such peaks linked to edge states at the Dirac point(s) coincide with the charge-neutrality point(s), associated with the minimum conductivity of graphene. Thus, we have an uncommon combination of interrelated “short-long”, “core-edge,” topological-aromatic transition(s) due to strong quantum confinement, driven by inversion symmetry conflict. The bandgap decreases with the 2/3 power of length before the “transition” and logarithmically afterwards. These effects are practically non-existent for wider AGNRs

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