Artículo de revista
Effect of variation of the central-hole depth and the axial anisotropy on the AB oscillations in a wide nanoring
Fecha
2017-06-26Registro en:
10.1088/1742-6596/786/1/012007
1742-6596
1742-6588
Autor
Rodríguez Prada, F. A.
Gutiérrez, W
Mikhailov, I.D.
Institución
Resumen
The effect of the external magnetic field on the spectral properties of one-electron
non-uniform quantum ring with radially directed hills is analysed. The corresponding oneparticle wave equation is separable in the adiabatic limit, when the layer thickness is essentially
smaller than its lateral dimension. Our calculations show that the presence of a single axially
directed hill as well as a rise of the central hole thickness produce a quenching of the AharonovBohm (AB) oscillations of the lower energy levels and of the magnetic momentum. However,
as the number of radially directed hills is increased, the system exhibits again oscillations,
resulted from an enhancement of tunnelling circular currents.