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

✍ Scribed by C. Siegert; A. Ghosh; M. Pepper; I. Farrer; D.A. Ritchie; D. Anderson; G.A.C. Jones

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
555 KB
Volume
40
Category
Article
ISSN
1386-9477

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✦ Synopsis

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 interspin magnetic exchange.

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