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Dissipative dynamics of an extended magnetic nanostructure: Spin necklace in a metallic environment

N. Shah·A. J. Millis
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Abstract

We study theoretically the dynamics of an ``xxz'' spin necklace coupled to a conduction electron sea, a model system for a nanostructure in a dissipative environment. We extract the long-time behavior via a mapping to a multichannel Coulomb gas problem followed by a scaling analysis. The strong quantum fluctuations of the necklace cause a nontrivial dependence of couplings on system size which we extract via an analysis involving the ``boundary condition changing operator'', and confirm via a detailed numerical evaluation of one case.

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N. Shah, A. J. Millis. 2003-05-22. Dissipative dynamics of an extended magnetic nanostructure: Spin necklace in a metallic environment. https://doi.org/10.1103/physrevlett.91.147204

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