论文信息 - Spin-dependent scattering in semiconducting ferromagnetic (Ga,Mn)As trilayer structures

Spin-dependent scattering in semiconducting ferromagnetic (Ga,Mn)As trilayer structures

The spin-dependent scattering in ferromagnet/nonmagnet/ferromagnet (Ga,Mn)As/(Al,Ga)As/(Ga,Mn)As trilayer structures was studied. An increase of sheet resistance was observed when the magnetizations of the two ferromagnetic (Ga,Mn)As layers were aligned anti-parallel, which was realized by the different coercivity of the two (Ga,Mn)As layers with different compositions. This is the first demonstration of spin-dependent scattering in magnetic multilayer structures made of semiconductor-materials alone.

[1] H. Ohno,et al. Interlayer exchange in (Ga,Mn)As/(Al,Ga)As/(Ga,Mn)As semiconducting ferromagnet/nonmagnet/ferromagnet trilayer structures , 1998 .

[2] H. Ohno,et al. Spontaneous splitting of ferromagnetic (Ga, Mn)As valence band observed by resonant tunneling spectroscopy , 1998 .

[3] H. Ohno,et al. Transport properties and origin of ferromagnetism in (Ga,Mn)As , 1998 .

[4] H. Akinaga,et al. Temperature dependence of interlayer coupling in δ MnGa/(Ga,As,Mn)/δ MnGa trilayers , 1997 .

[5] H. Ohno,et al. (Ga, Mn)As/GaAs Diluted Magnetic Semiconductor Superlattice Structures Prepared by Molecular Beam Epitaxy , 1997 .

[6] H. Ohno,et al. (Ga,Mn)As: A new diluted magnetic semiconductor based on GaAs , 1996 .

[7] Kumar,et al. Photoinduced antiferromagnetic interlayer coupling in Fe/(Fe-Si) superlattices. , 1993, Physical review letters.

[8] M. Julliere. Tunneling between ferromagnetic films , 1975 .

[9] M. Scheffler,et al. Proceedings of the 23rd International Conference on THE PHYSICS OF SEMICONDUCTORS , 1996 .