Coupling efficiency for phase locking of a spin transfer nano-oscillator to a microwave current

被引：134

作者：

Georges, B. ^{[1
,2
]}

Grollier, J. ^{[1
,2
]}

Darques, M. ^{[1
,2
]}

Cros, V. ^{[1
,2
]}

Deranlot, C. ^{[1
,2
]}

Marcilhac, B. ^{[1
,2
]}

Faini, G. ^{[3
]}

Fert, A. ^{[1
,2
]}

机构：

[1] CNRS Thales, Unite Mixte Phys, F-91767 Palaiseau, France

[2] Univ Paris 11, F-91767 Palaiseau, France

[3] CNRS, Phynano Team, Lab Photon & Nanostruct, F-91400 Orsay, France

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.101.017201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The phase locking behavior of spin transfer nano-oscillators (STNOs) to an external microwave signal is experimentally studied as a function of the STNO intrinsic parameters. We extract the coupling strength from our data using the derived phase dynamics of a forced STNO. The predicted trends on the coupling strength for phase locking as a function of intrinsic features of the oscillators, i.e., power, linewidth, agility in current, are central to optimize the emitted power in arrays of mutually coupled STNOs.

引用

页数：4

共 24 条

[1] STUDY OF LOCKING PHENOMENA IN OSCILLATORS [J].

ADLER, R .

PROCEEDINGS OF THE IEEE, 1973, 61 (10) :1380-1385

[2] 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

[3] Spin-torque-driven magnetization dynamics in nanomagnets subject to magnetic fields perpendicular to the sample plane [J].

Bonin, R ;

Bertotti, G ;

Mayergoyz, ID ;

Serpico, C .

JOURNAL OF APPLIED PHYSICS, 2006, 99 (08)

[4] Shaped angular dependence of the spin-transfer torque and microwave generation without magnetic field [J].

Boulle, O. ;

Cros, V. ;

Grollier, J. ;

Pereira, L. G. ;

Deranlot, C. ;

Petroff, F. ;

Faini, G. ;

Barnas, J. ;

Fert, A. .

NATURE PHYSICS, 2007, 3 (07) :492-497

[5] 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)

[6] Synchronization of spin-transfer oscillators driven by stimulated microwave currents [J].

Grollier, J ;

Cros, V ;

Fert, A .

PHYSICAL REVIEW B, 2006, 73 (06)

[7] Mutual phase-locking of microwave spin torque nano-oscillators [J].

Kaka, S ;

Pufall, MR ;

Rippard, WH ;

Silva, TJ ;

Russek, SE ;

Katine, JA .

NATURE, 2005, 437 (7057) :389-392

[8] Line shape distortion in a nonlinear auto-oscillator near generation threshold: Application to spin-torque nano-oscillators [J].

Kim, Joo-Von ;

Mistral, Q. ;

Chappert, C. ;

Tiberkevich, V. S. ;

Slavin, A. N. .

PHYSICAL REVIEW LETTERS, 2008, 100 (16)

[9] Microwave oscillations of a nanomagnet driven by a spin-polarized current [J].

Kiselev, SI ;

Sankey, JC ;

Krivorotov, IN ;

Emley, NC ;

Schoelkopf, RJ ;

Buhrman, RA ;

Ralph, DC .

NATURE, 2003, 425 (6956) :380-383

[10] Large-amplitude coherent spin waves excited by spin-polarized current in nanoscale spin valves [J].

Krivorotov, I. N. ;

Berkov, D. V. ;

Gorn, N. L. ;

Emley, N. C. ;

Sankey, J. C. ;

Ralph, D. C. ;

Buhrman, R. A. .

PHYSICAL REVIEW B, 2007, 76 (02)

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