Spin polarization and effective mass: a numerical study in disordered two dimensional systems

Details Spin polarization and effective mass: a numerical study in disordered two dimensional systems Spin polarization and effective mass: a numerical study in disordered two dimensional systems

2004-08-05

arxiv.org/abs/cond-mat/0408109v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures, accepted for publication in PRB

Scientific paper

10.1103/PhysRevB.70.113305

We numerically study the magnetization of small metallic clusters. The magnetic susceptibility is enhanced for lower electronic densities due to the stronger influence of electron-electron interactions. The magnetic susceptibility enhancement stems mainly from an enhancement of the mass for commensurate fillings, while for non-commensurate fillings its a result of an enhancement of the Land\'e $g$ factor. The relevance to recent experimental measurements is discussed.

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