Orbital magnetization of single and double quantum dots in a tight-binding model

A. Aldea, A. Manolescu, V. Moldoveanu, M. Niţă, V. Gudmundsson, B. Tanatar

Rannsóknarafurð: Framlag til fræðitímaritsGreinritrýni

20 Tilvitnanir (Scopus)

Útdráttur

We calculate the orbital magnetization of single and double quantum dots coupled both by Coulomb interaction and by electron tunneling. The electronic states of the quantum dots are calculated in a tight-binding model, and the magnetization is discussed in relation to the energy spectrum and to the edge and bulk states. We identify effects of chirality of the electronic orbits and of the anticrossing of the energy levels when the magnetic field is varied. We also consider the effects of detuning the energy spectra of the quantum dots by an external gate potential. We compare our results with the recent experiments of Oosterkamp et al. [Phys. Rev. Lett. 80, 4951 (1998)].

Upprunalegt tungumálEnska
FræðitímaritPhysical Review B - Condensed Matter and Materials Physics
Bindi67
Númer tölublaðs3
DOI
ÚtgáfustaðaÚtgefið - 2003

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