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

Siegert, C and Ghosh, A and Pepper, M and Farrer, I and Ritchie, DA and Anderson, D and Jones, GAC (2008) Sensitivity of the magnetic state of a spin lattice on itinerant electron orbital phase. In: Physica E: Low-dimensional Systems and Nanostructures, 40 (5). pp. 1460-1463.

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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.

Item Type: Journal Article
Publication: Physica E: Low-dimensional Systems and Nanostructures
Publisher: Elsevier
Additional Information: Copyright of this article belongs to Elsevier. This article also appeared in the 17th International Conference on Electronic Properties of Two-Dimensional Systems.
Keywords: Intrinsic spin lattice;2DEG;Spin interaction; Magnetic state;RKKY;Perpendicular magnetic field.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 08 Aug 2008
Last Modified: 19 Sep 2010 04:48
URI: http://eprints.iisc.ac.in/id/eprint/15485

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