垂直磁各向异性自旋阀结构中的铁磁共振

王日兴; 肖运昌; 赵婧莉

doi:10.7498/aps.63.217601

摘要

本文在理论上研究了垂直磁各向异性自旋阀结构中磁场激发和调节的铁磁共振. 通过线性展开包含自旋转移矩项的Landau-Lifshitz-Gilbert方程,获得了磁场激发和调节的铁磁共振谱. 给出了共振线宽、共振频率和共振磁场随直流电流密度大小和方向以及直流磁场的变化关系. 通过调节直流电流密度的大小和方向,系统的有效阻尼可以达到最小.

关键词:

A theoretical study is presented on the magnetic-field-excited and adjusted ferromagnetic resonance in the spin valve structures with perpendicular anisotropy. Through linearizing the Landau-Lifshitz-Gilbert equation including the spin-transfer torque term, the magnetic-field-excited and adjusted ferromagnetic resonant spectra are obtained. The dependences of the resonant linewidth, resonant frequency and resonant magnetic field on the magnitude and direction of dc current density and dc magnetic field are shown. The effective damping of the system can be minimized through adjusting the magnitude and the direction of current density.

Keywords:

作者及机构信息

1.
湖南文理学院电气与信息工程学院, 常德 415000

基金项目: 国家自然科学基金专项基金(批准号:11347132)和湖南文理学院博士启动基金(批准号:13102009,10133004)资助的课题.

Authors and contacts

1.
College of Electrical and Information Engineering, Hunan University of Arts and Science, Changde 415000, China

Funds: Project supported by the Special Funds of the National Natural Science Foundation of China (Grant No. 11347132), and the Doctor Foundation Startup from Hunan University of Arts and Science, China (Grant Nos. 13102009, 10133004).

参考文献

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[20]	Kittel C 1947 Phys. Rev. 71 270
[21]	Farle M 1998 Rep. Prog. Phys. 61 755
[22]	Mangin S, Ravelosona D, Katine J A, Carey M J, Terris B D, Fullerton E E 2006 Nature Mater. 5 210
[23]	Seki T, Mitani S, Yakushiji K, Takanashi K 2006 Appl. Phys. Lett. 88 172504
[24]	Meng H, Wang J P 2006 Appl. Phys. Lett. 88 172506
[25]	Zhu L J, Nie S H, Zhao J H 2013 Chin. Phys. B 22 118505
[26]	Kent A D, Öyilmaz B, Barco E del 2007 Appl. Phys. Lett. 84 3897
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施引文献

[1]	Berger L 1996 Phys. Rev. B 54 9353
[2]	Slonczewski J C 1996 J. Magn. Magn. Mater. 159 L1
[3]	Myers E B, Ralph D C, Katine J A, Louie R N, Buhrman R A 1999 Science 285 867
[4]	Katine J A, Albert F J, Buhrman R A, Myers E B, Ralph D C 2000 Phys. Rev. Lett. 84 3149
[5]	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, 陈陪毅 2008 物理学报 57 2427]
[6]	Bao J, Xu X G, Jiang Y 2009 Acta Phys. Sin. 58 7998 (in Chinese) [包瑾, 徐晓光, 姜勇 2009 物理学报 58 7998]
[7]	Sun C Y, Wang Z C 2010 Chin. Phys. Lett. 27 077501
[8]	Kiselev S I, Sankey J C, Krivorotov I N, Emley N C, Schoelkopf R J, Buhrman R A, Ralph D C 2003 Nature 425 380
[9]	Yang Z, Zhang S, Li Y C 2007 Phys. Rev. Lett. 99 134101
[10]	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]
[11]	Beaujour J M L, Kent A D, Abraham D W, Sun J Z 2008 J. Appl. Phys. 103 07B519
[12]	Wu C, Khalfan A N, Pettiford C, Sun N X, Greenbaum S, Ren Y 2008 J. Appl. Phys. 103 07B525
[13]	Kakazei G N, Martin P P, Ruiz A, Varela M, Alonso M, Paz E, Palomares F J, Cebollada F, Rubinger R M, Carmo M C, Sobolev N A 2008 J. Appl. Phys. 103 07B527
[14]	Mosendz O, Kardasz B, Heinrich B 2008 J. Appl. Phys. 103 07B505
[15]	Urban R, Woltersdorf G, Heinrich B 2001 Phys. Rev. Lett. 87 217204
[16]	Heinrich B, Tserkovnyak Y, Woltersdorf G, Brataas A, Urban R, Bauer G E W 2003 Phys. Rev. Lett. 90 187601
[17]	Lenz K, Toliński T, Lindner J, Kosubek E, Baberschke K 2004 Phys. Rev. B 69 144422
[18]	Kardasz B, Mosendz O, Heinrich B, Liu Z, Freeman M 2008 J. Appl. Phys. 103 07C509
[19]	Griffiths J H E 1946 Nature 158 670
[20]	Kittel C 1947 Phys. Rev. 71 270
[21]	Farle M 1998 Rep. Prog. Phys. 61 755
[22]	Mangin S, Ravelosona D, Katine J A, Carey M J, Terris B D, Fullerton E E 2006 Nature Mater. 5 210
[23]	Seki T, Mitani S, Yakushiji K, Takanashi K 2006 Appl. Phys. Lett. 88 172504
[24]	Meng H, Wang J P 2006 Appl. Phys. Lett. 88 172506
[25]	Zhu L J, Nie S H, Zhao J H 2013 Chin. Phys. B 22 118505
[26]	Kent A D, Öyilmaz B, Barco E del 2007 Appl. Phys. Lett. 84 3897
[27]	Lee K J, Redon O, Dieny B 2005 Appl. Phys. Lett. 86 022505
[28]	Liu N, Wang H, Zhu T 2012 Acta Phys. Sin. 61 167504 (in Chinese) [刘娜, 王海, 朱涛 2012 物理学报 61 167504]
[29]	Gu W J, Pan J, Hu J G 2012 Acta Phys. Sin. 61 167501 (in Chinese) [顾文娟, 潘靖, 胡经国 2012 物理学报 61 167501]

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