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一种新的自旋量子效应——电流感应磁化翻转 被引量：4

A Novel Spin-Dependent Quantum Effect:Current-Induced Magnetization Switching
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摘要 电流感应的磁化翻转效应是近年来继巨磁阻效应(GMR)和隧道磁阻效应(TMR)之后提出的一种nm尺度下新的自旋相关效应,在无外加磁场的情况下,垂直于铁磁层平面的自旋极化电流就能引起铁磁层的磁化翻转。该效应有望被用于制作新型的电流操纵磁存储器件。报道了该效应的理论和实验的研究进展。 A novel spin-dependent effect, current-induced magnetization switching （CIMS）, was put forward in recent years after giant magnetoresistive （GMR） and tunneling magnetoresistive （TMR） effects. According to CIMS effect, the magnetization of ferromagnetic film can be switched by a spin-polarized current perpendicular to the film plane, without external magnetic field. Therefore, it is promising that a new type of magnetic random access memory operated only by current can be realized based on this effect. The progresses on its theories and experiments were introduced.
作者 任敏 陈培毅 张磊 胡九宁 邓宁
机构地区 清华大学微电子学研究所
出处 《微纳电子技术》 CAS 2006年第12期553-557,581,共6页 Micronanoelectronic Technology
基金 清华大学基础研究重点基金资助项目(Jz2001010)
关键词 电流感应磁化翻转 自旋相关效应 赝自旋阀 current-induced magnetization switching spin-dependent effect pseudo-spin-valve
分类号 O488 [理学—固体物理]
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参考文献28

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同被引文献58

  • 1SLONCZEWSKI J C. Current-driven excitation of magnetic multilayers[J]. J Magn Magn Mater, 1996, 159 (1/2): L1 - L7.
  • 2BERGER L. Emission of spin waves by a magnetic multilayer traversed by a current[J]. Phys Rev: B, 1996, 54 (13): 9353 - 9358.
  • 3OGRODNIK P, WILCZYNSKI M, BARNAS J, et al. Magne- tization dynamics in a magnetic tunnel junction due to spin trans- fer torque in the presence of interlayer exchange coupling [J]. IEEE Transactions on Magnetics, 2011, 47 (6) : 1627- 1630.
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  • 5KAWAHARA T, TAKEMURA R, MIURA K, et al. 2 Mb spin- transfer torque RAM (SPRAM) with bit-by-bit bidirectional current write and paralldizing-direction current read [C]// Proceedings of 2007 IEEE International Solid-State Circuits. San Francisco, USA, 2007: 480-671.
  • 6LEEJ M, YELX, WENGMC, et al. Spin transfer mag netization switching read/write cycle test in MgO-based mag netic tunnel junctions [J]. IEEE Transactions on Magnetics 2007, 43 (7): 3349-3353.
  • 7SUN J Z, CHEN L, SUZUKI Y, et al. Thermally activated sweep-rate dependence of magnetic switching field in nano- structured current-perpendicular spin-valves [ J ]. J Magn Magn Mater, 2002, 247 (3): 237-241.
  • 8KATINEJA, ALBERTFJ, BUHRMANRA, etal. Cur- rent-driven magnetization reversal and spin-wave excitations in Co/Cu/Co pillars[J]. Phys Rev Lett, 2000, 84 (14), 3149- 3152.
  • 9ZUTIC I, FABIAN J, SARMA S D, Spintronics: fundamentals and applications [J] . Rev Mod Phys, 2004, 76 (2): 323-410.
  • 10SLONCZEWSKI J C. Current-driven excitation of magnetic muhilayers [J] . J Magn Magn Mater, 1996, 159 (1-2): L1-L7.

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微纳电子技术
2006年 第12期

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