Open AccessSPIN EFFECT ON ENERGY SPECTRUM AND MAGNETOCONDUCTANCE IN A MAGNETIC QUANTUM ANTIDOT
Author(s) -
Bin Wang,
Yong Guo,
Hui Hu,
Gu Bing-Lin
Publication year - 2000
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.49.1153
Subject(s) - physics , condensed matter physics , quantum tunnelling , spin (aerodynamics) , magnetic field , electron , landau quantization , quantum dot , quantum mechanics , thermodynamics
By solving the single particle Shrdinger equation in different regions,we have discussed the spin effect on the energy levels of electron and the magnetoconductance in the magnetic quantum antidot. It is shown that the interaction of spin and the magnetic field results in the split of the energy levels. The splitting features are different from those in homogeneous magnetic field,i.e.the extent of the splitting is closely related to the angular momentum quantum number. Electron resonant tunneling to the magnetic edge states gives rise to the oscillations of the magnetoconductance. And spin-assisting magnetoconductance is quite different from that in the case where electron spin is ignored.There are more and shallower dips in the magnetoconductance spectrum for the former case.