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arXiv · 0710.1221

Sensitivity of the magnetic state of a spin lattice on itinerant electron orbital phase

C. Siegert·A. Ghosh·M. Pepper·I. Farrer·D. A. Ritchie·D. Anderson·G. A. C. Jones
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Abstract

Spatially extended localized spins can interact via indirect exchange interaction through Friedel oscillations in the Fermi sea. In arrays of localized spins such interaction can lead to a magnetically ordered phase. Without external magnetic field such a phase is well understood via a "two-impurity" Kondo model. Here we employ non-equilibrium transport spectroscopy to investigate the role of the orbital phase of conduction electrons on the magnetic state of a spin lattice. We show experimentally, that even tiniest perpendicular magnetic field can influence the magnitude of the inter-spin magnetic exchange.

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C. Siegert, A. Ghosh, M. Pepper, I. Farrer, D. A. Ritchie, D. Anderson, G. A. C. Jones. 2007-10-05. Sensitivity of the magnetic state of a spin lattice on itinerant electron orbital phase. https://doi.org/10.1016/j.physe.2007.09.139

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