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http://dx.doi.org/10.4283/JMAG.2007.12.4.152

Spin Valve Effect in Lateral Py/Au/Py Devices  

Ku, Jang-Hae (Center for Spintronics Research, Korea Institute of Science and Technology)
Chang, Joon-Yeon (Center for Spintronics Research, Korea Institute of Science and Technology)
Koo, Hyun-Cheol (Center for Spintronics Research, Korea Institute of Science and Technology)
Eom, Jong-Hwa (Department of Physics, Sejong University)
Han, Suk-Hee (Center for Spintronics Research, Korea Institute of Science and Technology)
Kim, Gyu-Tae (Department of Electrical Engineering, Korea University)
Publication Information
Journal of Magnetics / v.12, no.4, 2007 , pp. 152-155 More about this Journal
Abstract
Spin dependent transport was investigated in lateral $Py(Ni_{81}Fe_{19})/Au/Py$ spin valve devices. Clear spin valve effect was observed in conventional four-terminal measurement geometry. Higher resistance was found in antiparallel magnetization field of two Py electrodes which is determined by anisotropy magnetoresistance (AMR) measurements. The rectangular shape of spin signal together with good agreement of switching field convinces observed spin valve signal is resulted from effective spin injection and detection. The magnetoresistance ratio decays exponentially with channel length by which spin diffusion length of Au channel was estimated to be 76 nm.
Keywords
local spin valve measurement; magnetoresistance; spin injection;
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1 S. A. Wolf, D. D. Awschalom, R. A. Buhrman, J. M. Daughton, S. von Molnar, M. L. Roukes, A. Y. Chtchelkanova, and D. M. Treger, Science 294, 1488 (2001)
2 T. Kimura, J. Hamrle, Y. Otani, K. Tsukagoshi, and A. Aoyagi, Appl. Phys. Lett. 85, 3501 (2004)   DOI   ScienceOn
3 A. T. Hanbicki, B. T. Jonker, G. Itskos, G. Kioseoglou, and A. Petrou, Appl. Phys. Lett. 80, 1240 (2002)
4 P. R. Hammar and M. Johnson, Phy. Rev. Lett. 88, 066806-1 (2002)   DOI   ScienceOn
5 HyunCheol Koo, Hyunjung Yi, Jae-Beom Ko, Joonyeon Chang, Suk-Hee Han, Donghwa Jung, Seon-Gu Huh, and Jonghwa Eom. Appl. Phys. Lett. 90, 022101 (2007)
6 S. O. Valenzuela and M. Tinkham, Appl. Phys. Lett. 85, 5914 (2004)   DOI   ScienceOn
7 M. Johnson, Phys. Rev. Lett. 70, 2142 (1993)
8 F. J. Jedema, A. T. Fillip, and B. J. van Wees, Nature 410, 345 (2001)   DOI   ScienceOn
9 Jang-Hae Ku, Joonyeon Chang, Hijung Kim, and Jonghwa Eom, Appl. Phys. Lett. 88, 172510 (2006)
10 M. H. Jeun, K. I. Lee, W. Y. Lee, Joonyeon Chang, and S. H. Han, J. Korean Phy. Soc. 46, S80 (2005)
11 Seong-Hoon Kim, Jonghwa Eom, Joonyeon Chang, and Suk-Hee Han, Appl. Phys. Lett. 89, 122116 (2006)
12 F. J. Jedema, H. B. Heersche, A. T. Fillip, J. J. A. Baselmans, and B. J. van Wees, Nature 416, 713 (2002)