The Modulation Of Quantum Magnetic Transport Properties In Graphene By Electric Field

More and more people are interested in Graphene in the materials science and condensed-matter physics.As a reduced dimensionality materials exhibits exceptionally high crystal and electronic quality,especially the anomalous quantum Hall effects.Along the same lines,theoretical works have predicated the appearance of Weiss oscillations in the magnetoconductivity with a one-dimensional periodic electrical or magnetic modulation in graphene.This phenomenon explained as a remarkable “relativistic-like” spectrum that electron and holes possess in graphene.In fact the Weiss oscillations in the magnetoconductivity with a one-dimensional periodic electrical or magnetic modulation in graphene has been predicated.The Weiss oscillation was shown to be periodic in the reciprocal magnetic field,We further explore the electrostatic field effect on the Weiss oscillation in the presence of crossed uniform in planeelectric field and perpendicular magnetic field that is weakly and periodically modulated along one direction or perpendicular electric field that is weakly and periodically modulated along one direction.The major conclusions are presented as follow.1.In the presence of crossed uniform in plane electric field and perpendicular electric field that is weakly the Bandwidth and the Density of States are presented novel oscillation.2.The oscillation amplitude?OA?of Weiss oscillation and the value of conductivity are both shown to increase with the increasing electric field E.We also find that the electric field leads to the disappearance of Weiss oscillation when the ratio of electric field to magnetic field ratio approaches a threshold value,i.e.,?₁=E/?v_FB?=1...