scholarly journals Will zigzag graphene nanoribbon turn to half metal under electric field?

2007 ◽  
Vol 91 (24) ◽  
pp. 243116 ◽  
Author(s):  
Er-Jun Kan ◽  
Zhenyu Li ◽  
Jinlong Yang ◽  
J. G. Hou
Keyword(s):  
Electric Field ◽  
Graphene Nanoribbon ◽  
Half Metal

EDGE MAGNETISM AND QUANTUM SPIN HALL EFFECT IN ZIGZAG GRAPHENE NANORIBBON

2013 ◽  
Vol 27 (15) ◽  
pp. 1362011 ◽  
Author(s):  
JUN-WON RHIM ◽  
KYUNGSUN MOON
Keyword(s):  
Electric Field ◽  
Hall Effect ◽  
Graphene Nanoribbon ◽  
Quantum Spin ◽  
Spin Hall Effect ◽  
Nonmonotonic Dependence ◽  
Quantum Spin Hall Effect ◽  
Edge Spin ◽  
Edge Band ◽  
Quantum Spin Hall

We present here a brief review on the remarkable consequences of the flat bands formed at the edges of the Zigzag graphene nanoribbon (ZGNR). The inclusion of the on-site Coulomb interaction is shown to induce the edge spin ferromagnetism, whose spin stiffness demonstrates a nonmonotonic dependence on the lateral electric field. The critical electric field strength corresponds to that of the insulator to half-metal transition. The inclusion of the spin–orbit coupling (SOC) has been believed to generate the quantum spin Hall effect (QSHE) guiding into the interesting new field of topological insulator. By carefully investigating the SOC near the edge, we have shown that the additional σ-edge band gives a marginal perturbation and hence the existence of the QSHE depends on the coupling strength between the π-edge bands and the σ-edge band. We demonstrate that for the charge neutral ZGNR, the QSHE does not occur in the pristine ZGNR, while the hydrogen passivation along the edge may recover the expected feature of the QSHE.

Planar rotation of electric field induced by edge-plasmon in a graphene nanoribbon

2019 ◽  
Vol 100 (15) ◽  
Author(s):  
M. Shoufie Ukhtary ◽  
Masato Maruoka ◽  
Riichiro Saito
Keyword(s):  
Electric Field ◽  
Graphene Nanoribbon ◽  
Planar Rotation

Electric-Field-Driven Dual Vacancies Evolution in Ultrathin Nanosheets Realizing Reversible Semiconductor to Half-Metal Transition

2015 ◽  
Vol 137 (47) ◽  
pp. 15043-15048 ◽  
Author(s):  
Mengjie Lyu ◽  
Youwen Liu ◽  
Yuduo Zhi ◽  
Chong Xiao ◽  
Bingchuan Gu ◽  
...  
Keyword(s):  
Electric Field ◽  
Ultrathin Nanosheets ◽  
Half Metal

DRIFT VELOCITY AND MOBILITY OF A GRAPHENE NANORIBBON IN A HIGH MAGNITUDE ELECTRIC FIELD

2011 ◽  
Author(s):  
N. A. Amin ◽  
M. T. Ahmadi ◽  
Z. Johari ◽  
J. F. Webb ◽  
S. M. Mousavi ◽  
...  
Keyword(s):  
Electric Field ◽  
Drift Velocity ◽  
Graphene Nanoribbon ◽  
High Magnitude

Topological state engineering by in-plane electric field in graphene nanoribbon

2017 ◽  
Vol 381 (34) ◽  
pp. 2841-2844 ◽  
Author(s):  
Xiao-Hui Yu ◽  
Lei Xu ◽  
Jun Zhang
Keyword(s):  
Electric Field ◽  
Graphene Nanoribbon ◽  
Topological State
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