Abstract
We have investigated the magnetic and magnetotransport properties of (Ga, Mn)As/(Al, Ga)As/ (Ga, Mn)As semiconductor-based magnetic trilayer structures. We observe a weak ferromagnetic interlayer coupling between the two ferromagnetic (Ga, Mn)As layers as well as magnetoresistance effects due to spin-dependent scattering and to spin-dependent tunneling. Both the coupling strength and the magnetoresistance ratio decrease with the increase of temperature and/or the increase of Al composition of the nonmagnetic (Al, Ga)As layer.
Original language | English |
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Pages (from-to) | 1873-1875 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 77 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2000 Sep 18 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)