Anisotropy effects in two-dimensional magnetic superlattices

Skuras, E., Long, A.R., Chowdhury, S., Boyd, E., Rahman, M., Kirk, K.J. and Davies, J. (2001) Anisotropy effects in two-dimensional magnetic superlattices. Journal of the Korean Physical Society, 39(3), 544 -548.

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We have studied the magnetoresistance of magnetic surface superlattices in which arrays of square cobalt dots are deposited on top of a GaAs/AlGaAs heterostructure. For a magnetic field inclined to the normal to the sample, strong commensurability oscillations are seen when the in-plane component of the field is parallel to the direction of current flow, but there is no such structure when the in-plane field is rotated through 90 degrees . For a normal field, the commensurability oscillations are weak and out of phase for transport in the different cleavage directions. All these results are in agreement with a recent semi-classical model of transport in 2-dimensional lateral superlattices.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Kirk, Dr Katherine and Long, Professor Andrew and Davies, Professor John
Authors: Skuras, E., Long, A.R., Chowdhury, S., Boyd, E., Rahman, M., Kirk, K.J., and Davies, J.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of the Korean Physical Society

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