Improved coherence of ultrafast spin-transfer-driven precessional switching with synthetic antiferromagnet perpendicular polarizer

被引：11

作者：

Vaysset, A. ^{[1
]}

Papusoi, C. ^{[1
]}

Buda-Prejbeanu, L. D. ^{[1
,2
]}

Bandiera, S. ^{[1
]}

de Castro, M. Marins ^{[1
]}

Dahmane, Y. ^{[1
]}

Toussaint, J. -C. ^{[2
,3
,4
]}

Ebels, U. ^{[1
]}

Auffret, S. ^{[1
]}

Sousa, R. ^{[1
]}

Vila, L. ^{[5
]}

Dieny, B. ^{[1
]}

机构：

[1] UJF Grenoble 1, Grenoble INP, CNRS, SPINTEC,INAC,UMR CEA, F-38054 Grenoble, France

[2] Grenoble INP, F-38031 Grenoble 1, France

[3] CNRS, Inst Neel, F-38042 Grenoble, France

[4] Univ Grenoble 1, F-38042 Grenoble, France

[5] CEA, INAC, SP2M, NM, F-38054 Grenoble, France

来源：

APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 24期

关键词：

MAGNETIZATION REVERSAL;

D O I：

10.1063/1.3597797

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The coherence of the precessional switching was compared in planar spin-valves comprising either an additional simple perpendicular polarizer or a synthetic antiferromagnet perpendicular polarizer. A significant improvement in the precession coherence was observed experimentally in the second type of samples. Micromagnetic simulations were performed to study the effect of the stray field from the perpendicular polarizer. They provide an explanation for the gradual loss of coherence of the precession in terms of vortex formation, which occurs much faster when a simple perpendicular polarizer is used. (C) 2011 American Institute of Physics. [doi:10.1063/1.3597797]

引用

页数：3

共 17 条

[1] Precessional spin-transfer switching in a magnetic tunnel junction with a synthetic antiferromagnetic perpendicular polarizer
de Castro, M. Marins
Sousa, R. C.
Bandiera, S.
Ducruet, C.
Chavent, A.
Auffret, S.
Papusoi, C.
Prejbeanu, I. L.
Portemont, C.
Vila, L.
Ebels, U.
Rodmacq, B.
Dieny, B.
JOURNAL OF APPLIED PHYSICS, 2012, 111 (07)
[2] A compact model of precessional spin-transfer switching for MTJ with a perpendicular polarizer
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Prenat, G.
Dieny, B.
2012 28TH INTERNATIONAL CONFERENCE ON MICROELECTRONICS (MIEL), 2012, : 225 - 228
[3] Macrospin model of precessional spin-transfer-torque switching in planar magnetic tunnel junctions with perpendicular polarizer
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Lacoste, B.
Prenat, G.
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APPLIED PHYSICS LETTERS, 2013, 102 (15)
[4] 100 ps precessional spin-transfer switching of a planar magnetic random access memory cell with perpendicular spin polarizer
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Delaet, B.
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APPLIED PHYSICS LETTERS, 2009, 95 (07)
[5] Ultrafast spin-transfer switching in spin valve nanopillars with perpendicular anisotropy
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Liu, H.
Bouzaglou, J. -J.
Kent, A. D.
Sun, J. Z.
Katine, J. A.
Fullerton, E. E.
Mangin, S.
APPLIED PHYSICS LETTERS, 2010, 96 (02)
[6] Resonant spin-transfer-driven switching of magnetic devices assisted by microwave current pulses
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Wang, C.
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Li, Z. -P.
Buhrman, R. A.
Ralph, D. C.
PHYSICAL REVIEW B, 2008, 77 (21)
[7] Spin-torque nano-oscillator based on a synthetic antiferromagnet free layer and perpendicular to plane polarizer
Firastrau, I.
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JOURNAL OF APPLIED PHYSICS, 2013, 113 (11)
[8] Spin-transfer induced ultrafast precessional switching enhanced by interface anisotropy in a ferromagnetic nanopillar
Daniel, M.
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JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2010, 322 (06) : 675 - 680
[9] Ultrafast Spin-Transfer-Torque Switching of Synthetic Ferrimagnets
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[10] Reduction in critical current for spin transfer switching in perpendicular anisotropy spin valves using an in-plane spin polarizer
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Chong, Tow Chong
APPLIED PHYSICS LETTERS, 2009, 94 (06)

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