Enhancing the energy spectrum of graphene quantum dot with external magnetic and Aharonov-Bohm flux fields

Heliyon

Juan Gerardo Avalos Ochoa¹  Fernando Adan Serrano Orozco²  Jose Luis Cuevas Figueroa²  Xochitl Cabrera Rivas²  Hugo Moises Martinez Carrada³ 

[1] Corresponding author.;Instituto Politécnico Nacional, Escuela Superior de Ingeniería Mecanica y Eléctrica Unidad Culhuacan, CDMX 04430, Mexico;Yachay Tech Univerity, School of Physical Sciences and Nanotechnology, 100115, Urcuqui, Ecuador;

关键词: Quantum mechanics;    Dirac-Weyl equation;    Energy eigenvalues;    Graphene quantum dot;    AB-flux field;    Landau Levels;   

DOI  :  

来源: DOAJ

【 摘 要 】

In this paper, we have to apply the Dirac-Weyl equation to find the analytical energy eigenvalues of the graphene quantum dot interacting in the presence of AB-flux field and external magnetic field. We find that the energy eigenvalue of the graphene quantum dot decreases with both magnetic and AB-flux field but the effect of AB-flux field is more dominant. By ameliorating the intensity of the AB-flux field and keeping the magnetic field constant, the quantum-dot states entangled to produce Landau Levels. We show that besides using the graphene sheet and external magnetic field, the Aharonov-Bohm AB-flux field could as well be used to manipulate the carriers state energies in graphene.

【 授权许可】

Unknown