Coulomb impurity effect on Dirac electron in graphene magnetic dot

C. M. Lee; K. S. Chan

doi:10.1063/1.4824808

Author(s)

C. M. Lee
K. S. Chan

Related Research Unit(s)

Detail(s)

Original language	English
Article number	143708
Journal / Publication	Journal of Applied Physics
Volume	114
Issue number	14
Publication status	Published - 14 Oct 2013

Link(s)

DOI	DOI https://doi.org/10.1063/1.4824808 Final Published version
	Check@CityULib
Attachment(s)	Documents 5859898.pdf Final Published version, 699 KB, PDF Publisher's Copyright Statement 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.
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-84886048944&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(422483ae-87eb-4066-87e3-22a14d3f6241).html

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.