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

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.

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

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

scholarly journals Multiphoton intersubband transitions in an armchair graphene nanoribbon

2021 ◽  
Vol 2103 (1) ◽  
pp. 012130
Author(s):  
B S Monozon ◽  
T A Fedorova ◽  
P Schmelcher
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
Constant Electric Field ◽  
Graphene Nanoribbon ◽  
Laser Technique ◽  
Strong Light ◽  
Vacuum Decay ◽  
Experimental Values ◽  
Armchair Graphene Nanoribbon ◽  
Armchair Graphene

Abstract We present an analytical approach to the problem of the interband transitions in an armchair graphene nanoribbon (AGNR), exposed to the time-periodic electric field of strong light wave, polarized parallel to the ribbon axis. The two-dimensional Dirac equation for the massless electron subject to the ribbon confinement is employed. In the resonant approximation the probability of the transitions between the valence and conduction size-quantized subbands are calculated in an explicit form. We trace the dependencies of the Rabi frequency for these transitions on the ribbon width and electric field strength for both the multiphoton-assisted and tunneling regimes relevant to the fast oscillating and practically constant electric field, respectively. Estimates of the expected experimental values for the typically employed AGNR and laser technique facilities show that the Rabi oscillations can be observed under laboratory conditions. The data, corresponding to the intersubband tunneling, makes the AGNR a 1D condensed matter analog, in which the quantum electrodynamic vacuum decay can be detected by the employment of the attainable electric fields.

Sign in / Sign up

Export Citation Format

Share Document