scholarly journals The transport properties of Dirac fermions in chemical vapour-deposited single-layer graphene

2016 ◽  
Vol 97 (3) ◽  
pp. 187-200 ◽  
Author(s):  
Engin Arslan ◽  
Şükrü Ardalı ◽  
Engin Tıraş ◽  
Semih Çakmakyapan ◽  
Ekmel Özbay
Keyword(s):  
Transport Properties ◽  
Chemical Vapour ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Dirac Fermions ◽  
Layer Graphene

NONLINEAR RESPONSE INDUCED STRONG ABSORPTANCE OF GRAPHENE IN THE TERAHERTZ REGIME

2010 ◽  
Vol 24 (21) ◽  
pp. 2243-2249 ◽  
Author(s):  
X. G. XU ◽  
J. C. CAO
Keyword(s):  
Nonlinear Optical ◽  
Low Frequency ◽  
Single Layer ◽  
Optical Response ◽  
Optoelectronic Device ◽  
Nonlinear Optical Response ◽  
Single Layer Graphene ◽  
Dirac Fermions ◽  
Layer Graphene ◽  
Fifth Order

We have calculated the fifth-order nonlinear optical response at experimentally relevant field strengths within the model of massless Dirac fermions by coupling the massless Dirac fermions to the time-dependent electric field quantum mechanically. It demonstrates that the fifth-order nonlinear optical response plays an important role in the contribution to the optical conductivity of pristine single-layer graphene in the low frequency part of the terahertz regime. The nonlinear effect can enhance the optical activity of single-layer graphene in the terahertz regime and significantly decreases the transmittance of graphene in the regime of frequencies from 0.1 to 0.5 THz. These properties of graphene may be used for photonic and optoelectronic device in the terahertz regime.

scholarly journals Coherent quantum transport through ferromagnetic graphene structures: Effects of Rashba spin–orbit coupling

2020 ◽  
Vol 2020 (7) ◽  
Author(s):  
Kobra Hasanirokh ◽  
Fezzeh Naderi
Keyword(s):  
Transport Properties ◽  
Quantum Transport ◽  
Structural Parameters ◽  
Single Layer ◽  
Orbit Coupling ◽  
Single Layer Graphene ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Layer Graphene ◽  
Rashba Spin

Abstract In a system consisting of a monolayer ferromagnetic graphene structure, based on the scattering matrix approach, we study the spin-dependent transmission coefficients, group delay time, magnetoresistance and giant magnetoresistance of spin-polarized electron tunneling through the Rashba barrier in single-layer graphene. The results show that Rashba spin–orbit coupling can cause a natural spin filter mechanism; it thus has a significant role in controlling the transmission probabilities. In addition, the quantum transport properties of our system depend critically on the structural parameters. The incidence angle, energy, barrier number, and exchange energies can strongly control the transport properties of multi-layer graphene. It is predicted that controlling spin-dependent transport in single layer graphene results can develop the well-known spintronics.

scholarly journals Two-point Green functions of free Dirac fermions in single-layer graphene ribbons with zigzag and armchair edges

2016 ◽  
Vol 7 (4) ◽  
pp. 045004
Author(s):  
Van Hieu Nguyen ◽  
Bich Ha Nguyen ◽  
Ngoc Dung Dinh ◽  
Ngoc Anh Huy Pham ◽  
Van Thanh Ngo
Keyword(s):  
Single Layer ◽  
Single Layer Graphene ◽  
Green Functions ◽  
Dirac Fermions ◽  
Layer Graphene

scholarly journals Low temperature growth of fully covered single-layer graphene using a CoCu catalyst

Nanoscale ◽  
2017 ◽  
Vol 9 (38) ◽  
pp. 14467-14475 ◽  
Author(s):  
Hisashi Sugime ◽  
Lorenzo D'Arsié ◽  
Santiago Esconjauregui ◽  
Guofang Zhong ◽  
Xingyi Wu ◽  
...  
Keyword(s):  
Thin Film ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Alloy Thin Film ◽  
High Quality ◽  
Temperature Growth ◽  
Layer Graphene ◽  
Thin Film Catalyst

A bimetallic CoCu alloy thin-film catalyst is developed that enables the growth of uniform, high-quality graphene at 750 °C in 3 min by chemical vapour deposition.

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