Bi-quadratic interlayer exchange coupling in Co2MnSi/Ag/Co2MnSi pseudo spin-valve
作者： Hari S. Goripati , Masamitsu Hayashi , T. Furubayashi , T. Taniguchi , H. Sukegawa
DOI: 10.1063/1.3671634
关键词:
摘要: Bi-quadratic interlayer exchange coupling is found below 100 K in a Co2MnSi/Ag/Co2MnSi current-perpendicular-to-plane pseudo spin valves. The bi-quadratic constant J2 was estimated to be ∼−0.30 erg/cm2 at 5 and the strong temperature dependence of strength points its likely origin “loose spin” model. Application current ∼2 × 107 A/cm2 leads an increase magnetoresistance (MR), indicating induced antiparallel alignment two magnetic layers. These results strongly suggest that presence causes reduction low illustrates importance understanding influence on magnetization configuration nanostructures.
scitation.org
harvard.edu
sci-hub.se 参考文章(29)
Hiroaki Sukegawa, Shinya Kasai, Takao Furubayashi, Seiji Mitani, Koichiro Inomata, Spin-transfer switching in an epitaxial spin-valve nanopillar with a full-Heusler Co2FeAl0.5Si0.5 alloy Applied Physics Letters. ,vol. 96, pp. 042508- ,(2010) , 10.1063/1.3297879
Y. Sakuraba, M. Hattori, M. Oogane, Y. Ando, H. Kato, A. Sakuma, T. Miyazaki, H. Kubota, Giant tunneling magnetoresistance in Co2MnSi∕Al–O∕Co2MnSi magnetic tunnel junctions Applied Physics Letters. ,vol. 88, pp. 192508- ,(2006) , 10.1063/1.2202724
T. M. Nakatani, T. Furubayashi, S. Kasai, H. Sukegawa, Y. K. Takahashi, S. Mitani, K. Hono, Bulk and interfacial scatterings in current-perpendicular-to-plane giant magnetoresistance with Co2Fe(Al0.5Si0.5) Heusler alloy layers and Ag spacer Applied Physics Letters. ,vol. 96, pp. 212501- ,(2010) , 10.1063/1.3432070
T. Furubayashi, K. Kodama, T. M. Nakatani, H. Sukegawa, Y. K. Takahashi, K. Inomata, K. Hono, Structure and transport properties of current-perpendicular-to-plane spin valves using Co2FeAl0.5Si0.5 and Co2MnSi Heusler alloy electrodes Journal of Applied Physics. ,vol. 107, pp. 113917- ,(2010) , 10.1063/1.3431530
Y. K. Takahashi, A. Srinivasan, B. Varaprasad, A. Rajanikanth, N. Hase, T. M. Nakatani, S. Kasai, T. Furubayashi, K. Hono, Large magnetoresistance in current-perpendicular-to-plane pseudospin valve using a Co2Fe(Ge0.5Ga0.5) Heusler alloy Applied Physics Letters. ,vol. 98, pp. 152501- ,(2011) , 10.1063/1.3576923
I. Galanakis, P. H. Dederichs, N. Papanikolaou, Slater-Pauling behavior and origin of the half-metallicity of the full-Heusler alloys Physical Review B. ,vol. 66, pp. 174429- ,(2002) , 10.1103/PHYSREVB.66.174429
J.C. Slonczewski, Current-driven excitation of magnetic multilayers Journal of Magnetism and Magnetic Materials. ,vol. 159, pp. L1- L7 ,(1996) , 10.1016/0304-8853(96)00062-5
S. Demokritov, E. Tsymbal, P. Grünberg, W. Zinn, Ivan K. Schuller, Magnetic-dipole mechanism for biquadratic interlayer coupling. Physical Review B. ,vol. 49, pp. 720- 723 ,(1994) , 10.1103/PHYSREVB.49.720
M. Schäfer, S. Demokritov, S. Müller‐Pfeiffer, R. Schäfer, M. Schneider, P. Grünberg, W. Zinn, Investigation of 90° coupling in Fe/Ag/Fe structures: ‘‘Loose spins’’ and fluctuation mechanism Journal of Applied Physics. ,vol. 77, pp. 6432- 6438 ,(1995) , 10.1063/1.359117
Taku Iwase, Yuya Sakuraba, Subrojati Bosu, Kesami Saito, Seiji Mitani, Koki Takanashi, Large Interface Spin-Asymmetry and Magnetoresistance in Fully Epitaxial Co2MnSi/Ag/Co2MnSi Current-Perpendicular-to-Plane Magnetoresistive Devices Applied Physics Express. ,vol. 2, pp. 063003- ,(2009) , 10.1143/APEX.2.063003