|
Title
|
|
|
|
Graphene in inhomogeneous magnetic fields : bound, quasi-bound and scattering states
|
|
|
Author
|
|
|
|
|
|
|
Abstract
|
|
|
|
| The electron states in graphene-based magnetic dot and magnetic ring structures and combinations of both are investigated. The corresponding spectra are studied as a function of the radii, the strengths of the inhomogeneous magnetic field and of a uniform background field, the strength of an electrostatic barrier and the angular momentum quantum number. In the absence of an external magnetic field we have only long-lived quasi-bound and scattering states and we assess their influence on the density of states. In addition, we consider elastic electron scattering by a magnetic dot, whose average B vanishes, and show that the Hall and longitudinal resistivities, as a function of the Fermi energy, exhibit a pronounced oscillatory structure due to the presence of quasi-bound states. Depending on the dot parameters this oscillatory structure differs substantially for energies below and above the first Landau level. |
|
|
|
Language
|
|
|
|
English
|
|
|
Source (journal)
|
|
|
|
Journal of physics : condensed matter. - London
|
|
|
Publication
|
|
|
|
London
:
2011
|
|
|
ISSN
|
|
|
|
0953-8984
|
|
|
DOI
|
|
|
|
10.1088/0953-8984/23/31/315301
|
|
|
Volume/pages
|
|
|
|
23
:31
(2011)
, p. 315301,1-315301,14
|
|
|
Article Reference
|
|
|
|
315301
|
|
|
ISI
|
|
|
|
000293008900002
|
|
|
Medium
|
|
|
|
E-only publicatie
|
|
|
Full text (Publisher's DOI)
|
|
|
|
|
|
|
Full text (publisher's version - intranet only)
|
|
|
|
|
|