Magnetic interaction between GaMnAs layers via spin-polarized quasi-two-dimensional hole gas: Monte Carlo simulation

Details Magnetic interaction between GaMnAs layers via spin-polarized quasi-two-dimensional hole gas: Monte Carlo simulation Magnetic interaction between GaMnAs layers via spin-polarized quasi-two-dimensional hole gas: Monte Carlo simulation

2002-09-04

arxiv.org/abs/cond-mat/0209108v1

Physics

Condensed Matter

Materials Science

3 pages

Scientific paper

The magnetic order resulting from an indirect exchange between magnetic moments in the metallic phase of a Ga(1-x)Mn(x)As bilayered structure is studied "via" Monte Carlo simulation. The coupling mechanism involves a perturbative calculation in second order of the interaction between the magnetic moments and carriers (holes). We take into account a possible polarization of the hole gas establishing, thus, self-consistency between the magnetic order and the electronic structure. It leads to a ferromagnetic order even in the case of thin layers. This fact is analyzed in terms of the inter- and intra-layer interactions.

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