Localized magnetic states in Rashba dots

Details Localized magnetic states in Rashba dots Localized magnetic states in Rashba dots

2009-02-16

arxiv.org/abs/0902.2662v1

Phys. Rev. B 79, 125319 (2009)

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, 4 figures; to appear in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.79.125319

We study the formation of local moments in quantum dots arising in quasi-one dimensional electron wires due to localized spin-orbit (Rashba) interaction. Using an Anderson-like model to describe the occurrence of the magnetic moments in these Rashba dots, we calculate the local magnetization within the mean-field approximation. We find that the magnetization becomes a nontrivial function of the Rashba coupling strength. We discuss both the equilibrium and nonequilibrium cases. Interestingly, we obtain a magnetic phase which is stable at large bias due to the Rashba interaction.

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