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Magnetic coupling in ferromagnetic semiconductor (Ga,Mn)As/(Al,Ga,Mn)As bilayers

Wang, M.; Wadley, P.; Campion, R. P.; Rushforth, A. W.; Edmonds, K. W.; Gallagher, B. L.; Charlton, T. R.; Kinane, C. J.; Langridge, S.

Authors

M. Wang

PETER WADLEY PETER.WADLEY@NOTTINGHAM.AC.UK
Principal Research Fellow

K. W. Edmonds

B. L. Gallagher

T. R. Charlton

C. J. Kinane

S. Langridge



Abstract

We report on a study of ferromagnetic semiconductor (Ga,Mn)As/(Al,Ga,Mn)As bilayers using magnetometry and polarized neutron reflectivity (PNR). From depth-resolved characterization of the magnetic structure obtained by PNR, we concluded that the (Ga,Mn)As and (Al,Ga,Mn)As layers have in-plane and perpendicular-to-plane magnetic easy axes, respectively, with weak interlayer coupling. Therefore, the layer magnetizations align perpendicular to each other under low magnetic fields and parallel at high fields.

Citation

Wang, M., Wadley, P., Campion, R. P., Rushforth, A. W., Edmonds, K. W., Gallagher, B. L., …Langridge, S. (2015). Magnetic coupling in ferromagnetic semiconductor (Ga,Mn)As/(Al,Ga,Mn)As bilayers. Journal of Applied Physics, 118(5), https://doi.org/10.1063/1.4928206

Journal Article Type Article
Acceptance Date Jul 28, 2015
Publication Date Aug 7, 2015
Deposit Date Apr 19, 2017
Publicly Available Date Apr 19, 2017
Journal Journal of Applied Physics
Print ISSN 0021-8979
Electronic ISSN 1089-7550
Publisher AIP Publishing
Peer Reviewed Peer Reviewed
Volume 118
Issue 5
Article Number 053913
DOI https://doi.org/10.1063/1.4928206
Public URL http://eprints.nottingham.ac.uk/id/eprint/42039
Publisher URL http://aip.scitation.org/doi/10.1063/1.4928206
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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