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

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

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

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.

Original languageEnglish
Article number053913
JournalJournal of Applied Physics
Volume118
Issue number5
DOIs
StatePublished - Aug 7 2015
Externally publishedYes

Funding

FundersFunder number
Seventh Framework Programme214499, 268066

    Fingerprint

    Dive into the research topics of 'Magnetic coupling in ferromagnetic semiconductor (Ga,Mn)As/(Al,Ga,Mn)As bilayers'. Together they form a unique fingerprint.

    Cite this