%0 Journal Article %1 yuasa:01 %A Yuasa, S. %A Sato, T. %A Tamura, E. %A Suzuki, Y. %A Yamamori, H. %A Ando, K. %A Katayama, T. %D 2000 %J EPL (Europhysics Letters) %K thickness %N 3 %P 344-350 %T Magnetic tunnel junctions with single-crystal electrodes: A crystal anisotropy of tunnel magneto-resistance %U http://stacks.iop.org/0295-5075/52/344 %V 52 %X A strong dependence of tunnel magnetoresistance (TMR) on the crystal orientation of ferromagnetic electrodes was confirmed experimentally. We studied the TMR of Fe/Al2O3/Fe50Co50 tunnel junctions with single-crystal Fe electrodes of different crystal orientations and found that the TMR ratio increased from 13\% to 42\% at 2K (8\% to 26\% at room temperature) when the crystal orientation was changed from (100) to (211). Such a TMR anisotropy could be explained in terms of the anisotropic spin polarization of Fe bulk and/or interface electronic states. The importance of the "momentum-filtering" effect of the tunnel barrier was also discussed.

@article{yuasa:01, abstract = {A strong dependence of tunnel magnetoresistance (TMR) on the crystal orientation of ferromagnetic electrodes was confirmed experimentally. We studied the TMR of Fe/Al2O3/Fe50Co50 tunnel junctions with single-crystal Fe electrodes of different crystal orientations and found that the TMR ratio increased from 13\% to 42\% at 2K (8\% to 26\% at room temperature) when the crystal orientation was changed from (100) to (211). Such a TMR anisotropy could be explained in terms of the anisotropic spin polarization of Fe bulk and/or interface electronic states. The importance of the "momentum-filtering" effect of the tunnel barrier was also discussed.}, added-at = {2008-06-09T12:20:29.000+0200}, author = {Yuasa, S. and Sato, T. and Tamura, E. and Suzuki, Y. and Yamamori, H. and Ando, K. and Katayama, T.}, biburl = {https://www.bibsonomy.org/bibtex/2537d76b65e8192e376642dc7421c0d8c/srd27}, interhash = {abb23653d43a3f8645652fc09641b552}, intrahash = {537d76b65e8192e376642dc7421c0d8c}, journal = {EPL (Europhysics Letters)}, keywords = {thickness}, number = 3, pages = {344-350}, timestamp = {2008-06-09T12:20:29.000+0200}, title = {Magnetic tunnel junctions with single-crystal electrodes: A crystal anisotropy of tunnel magneto-resistance}, url = {http://stacks.iop.org/0295-5075/52/344}, volume = 52, year = 2000 }