Abstract
Using the Dirac-Weyl model, we study the low-lying spectra of a massless Dirac electron bound to a positively charged Coulomb impurity in a graphene magnetic dot, for which the inhomogeneous magnetic field is created by different magnetic fields inside and outside the dot with a field ratio α. Numerical results show that the zero energy states, in the presence of the impurity, are converted into hole-like states. Additionally, for positive and negative α values, the states are, in general, located inside and outside the dot, respectively, causing the spectra to exhibit different features. © 2013 AIP Publishing LLC.
| Original language | English |
|---|---|
| Article number | 143708 |
| Journal | Journal of Applied Physics |
| Volume | 114 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - 14 Oct 2013 |
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 , "Coulomb impurity effect on Dirac electron in graphene magnetic dot", Journal of Applied Physics 114, 143708 (2013) and may be found at https://doi.org/10.1063/1.4824808.