Synchronization of spin torque nano-oscillators through dipolar interactions

被引：15

作者：

Chen, Hao-Hsuan ^{[1
]}

Lee, Ching-Ming ^{[2
]}

Wu, Jong-Ching ^{[1
]}

Horng, Lance ^{[1
]}

Chang, Ching-Ray ^{[3
,4
]}

Chang, Jui-Hang ^{[3
,4
]}

机构：

[1] Natl Changhua Univ Educ, Dept Phys, Changhua 500, Taiwan

[2] Natl Yunlin Univ Sci & Technol, Grad Sch Mat Sci, Touliu 64002, Taiwan

[3] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan

[4] Natl Taiwan Univ, Ctr Quantum Sci & Engn, Taipei 10617, Taiwan

来源：

JOURNAL OF APPLIED PHYSICS | 2014年 / 115卷 / 13期

关键词：

MAGNETIZATION REVERSAL; PHASE-LOCKING; DRIVEN; MULTILAYER; EXCITATION; POLARIZER;

D O I：

10.1063/1.4869203

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In an array of spin-torque nano-oscillators (STNOs) that combine a perpendicular polarized fixed layer with strong in-plane anisotropy in the free layers, magnetic dipolar interactions can effectively phase-lock the array, thus further enhancing the power of the output microwave signals. We perform a qualitative analysis of the synchronization of an array based on the Landau-Lifshitz-Gilbert equation, with a spin-transfer torque that assumes strong in-plane anisotropy. Finally, we present the numerical results for four coupled STNOs to provide further evidence for the proposed theory. (C) 2014 AIP Publishing LLC.

引用

页数：12

共 38 条

[1] Precession states in planar spin-transfer devices: The effective one-dimensional approximation [J].

Bazaliy, Ya. B. .

PHYSICAL REVIEW B, 2007, 76 (14)

[2] Phase locking dynamics of dipolarly coupled vortex-based spin transfer oscillators [J].

Belanovsky, A. D. ;

Locatelli, N. ;

Skirdkov, P. N. ;

Araujo, F. Abreu ;

Grollier, J. ;

Zvezdin, K. A. ;

Cros, V. ;

Zvezdin, A. K. .

PHYSICAL REVIEW B, 2012, 85 (10)

[3] Influence of current leads on critical current for spin precession in magnetic multilayers [J].

Berger, L .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2004, 278 (1-2) :185-194

[4] Emission of spin waves by a magnetic multilayer traversed by a current [J].

Berger, L .

PHYSICAL REVIEW B, 1996, 54 (13) :9353-9358

[5] Magnetization switching and microwave oscillations in nanomagnets driven by spin-polarized currents [J].

Bertotti, G ;

Serpico, C ;

Mayergoyz, ID ;

Magni, A ;

d'Aquino, M ;

Bonin, R .

PHYSICAL REVIEW LETTERS, 2005, 94 (12)

[6] SYNCHRONIZATION OF SPIN-TORQUE NANO-OSCILLATORS FROM AN INDUCED CORRUGATED ATTRACTOR [J].

Chen, Haohsuan ;

Chang, Juihang ;

Chang, Chingray .

SPIN, 2011, 1 (01) :1-20

[7] Phase locking of spin-torque oscillators by spin-wave interactions [J].

Chen, Xi ;

Victora, R. H. .

PHYSICAL REVIEW B, 2009, 79 (18)

[8] Macrospin description of the perpendicular polarizer-planar free-layer spin-torque oscillator [J].

Ebels, U. ;

Houssameddine, D. ;

Firastrau, I. ;

Gusakova, D. ;

Thirion, C. ;

Dieny, B. ;

Buda-Prejbeanu, L. D. .

PHYSICAL REVIEW B, 2008, 78 (02)

[9] Magnetization reversal by injection and transfer of spin:: experiments and theory [J].

Fert, A ;

Cros, V ;

George, JM ;

Grollier, J ;

Jaffrès, H ;

Hamzic, A ;

Vaurès, A ;

Faini, G ;

Ben Youssef, J ;

Le Gall, H .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2004, 272 :1706-1711

[10] Impact of the electrical connection of spin transfer nano-oscillators on their synchronization: an analytical study [J].

Georges, B. ;

Grollier, J. ;

Cros, V. ;

Fert, A. .

APPLIED PHYSICS LETTERS, 2008, 92 (23)

← 1 2 3 4 →