Abstract
Employing numerical diagonalization, we study the optical properties of an electron in a monolayer-graphene magnetic dot bound to an off-center negatively charged Coulomb impurity based on the massless Dirac-Weyl model. Numerical results show that, since the electron-hole symmetry is broken by the Coulomb potential, the optical absorption spectra of the magnetic dot in the presence of a Coulomb impurity are different between the electron states and the hole states. Effects of both the magnetic field and the dot size on the absorption coefficient are presented as functions of the incident photon energies. © 2014 AIP Publishing LLC.
| Original language | English |
|---|---|
| Article number | 43712 |
| Journal | Journal of Applied Physics |
| Volume | 116 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 28 Jul 2014 |
Publisher's Copyright Statement
- COPYRIGHT TERMS OF DEPOSITED FINAL PUBLISHED VERSION FILE: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in C. M. Lee and K. S. Chan , "Optical spectra and intensities of graphene magnetic dot bound to a negatively charged Coulomb impurity", Journal of Applied Physics 116, 043712 (2014) and may be found at https://doi.org/10.1063/1.4891886.