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Excessive spin-torque critical current has long been a problem received much attention. In this paper, we suggest that by introducing the out-of-plane stress or the stress anisotropy field, the out-of-plane demagnetizing field can be compensated effectively, and in this way the spin-torque critical current can be reduced. Specifically, the four-component distributed spin-circuit model is used to calculate the polarization current which is transferred from the polarizer to the detector (free layer).The properties of magnetization switching in the free layer of the lateral spin valve are studied under the influence of stress by using the Landau-Lifshitz-Gilbert-Slonczewski (LLGS) equation. Results show that, if the stress direction is appropriately selected, the out-of-plane demagnetizing field can be effectively compensated, thereby the spin torque critical current can be significantly reduced. Furthermore, as the stress is increased and the demagnetizing field is reduced, the magnetization reversal time is greatly reduced.
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Keywords:
- lateral spin valve /
- spin torque /
- critical current /
- stress
[1] Yuan X B, Ren J F, Hu G C 2012 Chin. Phys. Lett. 29 067501
[2] Villamor E, Isasa M, Hueso L E, Casanova F 2013 Phys. Rev. B 88 184411
[3] Jin W, Liu Y W 2010 Chin. Phys. B 19 037001
[4] Sun C Y, Wang Z C 2010 Chin. Phys. Lett. 27 077501
[5] Slonczewski J C 1996 J. Magn. Magn. Mater. 159 1
[6] Zhang L, Ren M, Hu J N, Deng N, Chen P Y 2008 Acta Phys. Sin. 57 2427 (in Chinese)[张磊, 任敏, 胡九宁, 邓宁, 陈培毅 2008 物理学报 57 2427]
[7] Jin W, Wan Z M, Liu Y W 2011 Acta Phys. Sin. 60 017502 (in Chinese)[金伟, 万振茂, 刘要稳 2011 物理学报 60 017502]
[8] Xu H Z, Chen X, Liu J M 2008 J. Appl. Phys. 104 093919
[9] Cimpoesu Dorin, Pham Huy, Stancu Alexandru, Spinu Leonard 2008 J. Appl. Phys. 104 113918
[10] Atxitia U, Chubykalo-FesenkoaN O, Kazantseva N, Hinzke D, Nowak U, Chantrell R W 2007 Appl. Phys. Lett. 91 232507
[11] Koopmans B, Ruigrok J J M, Longa F D, de. Jonge W J M 2005 Phys. Rev. Lett. 95 267207
[12] Jiao X, Ren Y, Zhang Z, Jin Q, Liu Y 2013 IEEE Trans. Magn. 49 3191
[13] Wei H X, He J, Wen Z C, Han X F, Zhan W S, Zhang S 2008 Phys. Rev. B 77 134432
[14] Liu L, Moriyama T, Ralph D C, Buhrman R A 2009 Appl. Phys. Lett. 94 122508
[15] Laua Y C, Oguz K, Rode K, Coey J M D 2013 Eur. Phys. J. B 86 110
[16] Guo Z Z, Hu X B 2013 Acta Phys. Sin. 62 057501 (in Chinese)[郭子政, 胡旭波 2013 物理学报 62 057501]
[17] Zhang H, Zeng D C, Liu Z W 2011 Acta Phys. Sin. 60 067503 (in Chinese)[张辉, 曾德长, 刘仲武 2011 物理学报 60 067503]
[18] Pan J, Zhou L, Tao Y C, Hu J G 2007 Acta Phys. Sin. 56 3521 (in Chinese)[潘靖, 周岚, 陶永春, 胡经国 2007 物理学报 56 3521]
[19] Qian L J, Xu X Y, Hu J G 2009 Chin. Phys. B 18 2589
[20] Zhu B, LO C C H, Lee S J, Jiles D C 2001 J. Appl. Phys. 89 7009
[21] Behin-Aein B, Sarkar A, Srinivasan S, Datta S 2011 Appl. Phys. Lett. 98 123510
[22] Behin-Aein B, Datta D, Sayeef S, Datta S 2010 Nat. Nanotech. 5 266
[23] Behin-Aein B, Salahuddin S, Datta S 2009 IEEE Tran. Nanotech. 8 505
[24] Zhou Y, Bonetti S, Zha C L, Åkerman J 2009 New J. Phys. 11 103028
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[1] Yuan X B, Ren J F, Hu G C 2012 Chin. Phys. Lett. 29 067501
[2] Villamor E, Isasa M, Hueso L E, Casanova F 2013 Phys. Rev. B 88 184411
[3] Jin W, Liu Y W 2010 Chin. Phys. B 19 037001
[4] Sun C Y, Wang Z C 2010 Chin. Phys. Lett. 27 077501
[5] Slonczewski J C 1996 J. Magn. Magn. Mater. 159 1
[6] Zhang L, Ren M, Hu J N, Deng N, Chen P Y 2008 Acta Phys. Sin. 57 2427 (in Chinese)[张磊, 任敏, 胡九宁, 邓宁, 陈培毅 2008 物理学报 57 2427]
[7] Jin W, Wan Z M, Liu Y W 2011 Acta Phys. Sin. 60 017502 (in Chinese)[金伟, 万振茂, 刘要稳 2011 物理学报 60 017502]
[8] Xu H Z, Chen X, Liu J M 2008 J. Appl. Phys. 104 093919
[9] Cimpoesu Dorin, Pham Huy, Stancu Alexandru, Spinu Leonard 2008 J. Appl. Phys. 104 113918
[10] Atxitia U, Chubykalo-FesenkoaN O, Kazantseva N, Hinzke D, Nowak U, Chantrell R W 2007 Appl. Phys. Lett. 91 232507
[11] Koopmans B, Ruigrok J J M, Longa F D, de. Jonge W J M 2005 Phys. Rev. Lett. 95 267207
[12] Jiao X, Ren Y, Zhang Z, Jin Q, Liu Y 2013 IEEE Trans. Magn. 49 3191
[13] Wei H X, He J, Wen Z C, Han X F, Zhan W S, Zhang S 2008 Phys. Rev. B 77 134432
[14] Liu L, Moriyama T, Ralph D C, Buhrman R A 2009 Appl. Phys. Lett. 94 122508
[15] Laua Y C, Oguz K, Rode K, Coey J M D 2013 Eur. Phys. J. B 86 110
[16] Guo Z Z, Hu X B 2013 Acta Phys. Sin. 62 057501 (in Chinese)[郭子政, 胡旭波 2013 物理学报 62 057501]
[17] Zhang H, Zeng D C, Liu Z W 2011 Acta Phys. Sin. 60 067503 (in Chinese)[张辉, 曾德长, 刘仲武 2011 物理学报 60 067503]
[18] Pan J, Zhou L, Tao Y C, Hu J G 2007 Acta Phys. Sin. 56 3521 (in Chinese)[潘靖, 周岚, 陶永春, 胡经国 2007 物理学报 56 3521]
[19] Qian L J, Xu X Y, Hu J G 2009 Chin. Phys. B 18 2589
[20] Zhu B, LO C C H, Lee S J, Jiles D C 2001 J. Appl. Phys. 89 7009
[21] Behin-Aein B, Sarkar A, Srinivasan S, Datta S 2011 Appl. Phys. Lett. 98 123510
[22] Behin-Aein B, Datta D, Sayeef S, Datta S 2010 Nat. Nanotech. 5 266
[23] Behin-Aein B, Salahuddin S, Datta S 2009 IEEE Tran. Nanotech. 8 505
[24] Zhou Y, Bonetti S, Zha C L, Åkerman J 2009 New J. Phys. 11 103028
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