The Two Dimensional Kondo Model with Rashba Spin-Orbit Coupling

Details The Two Dimensional Kondo Model with Rashba Spin-Orbit Coupling The Two Dimensional Kondo Model with Rashba Spin-Orbit Coupling

2007-08-17

arxiv.org/abs/0708.2435v2

J. Stat. Phys. 129, 741 (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

22 pages, 1 figure; reference updated

Scientific paper

10.1007/s10955-007-9414-x

We investigate the effect that Rashba spin-orbit coupling has on the low energy behaviour of a two dimensional magnetic impurity system. It is shown that the Kondo effect, the screening of the magnetic impurity at temperatures T < T_K, is robust against such spin-orbit coupling, despite the fact that the spin of the conduction electrons is no longer a conserved quantity. A proposal is made for how the spin-orbit coupling may change the value of the Kondo temperature T_K in such systems and the prospects of measuring this change are discussed. We conclude that many of the assumptions made in our analysis invalidate our results as applied to recent experiments in semi-conductor quantum dots but may apply to measurements made with magnetic atoms placed on metallic surfaces.

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