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Magnetization of interacting confined two-dimensional
electron systems.

Gabriel Vasile

Science Institute, University of Iceland, IS-107 Reykjavik,
Iceland

e-mail: vasile@raunvis.hi.is

**Abstract**

In order to understand the orbital and spin magnetization of a a confined
electronic system we analyze these ground state properties in the
transition from a quantum dot to a quantum ring of finite thickness.
The Coulomb interaction between the electrons is treated in the Hartree
and Hartree-Fock approximations and special care is taken to include
also the contributions of the nonlocal current to the summation of the
magnetic moments of the occupied states. We identify changes in the
many-body structure of the ground state and in the magnetization curves
versus the magnetic field and other parameters characterizing the system.