Nonlinear Behavior and Mode Coupling in Spin-Transfer Nano-Oscillators

被引：28

作者：

Lebrun, Romain ^{[1
,2
]}

Locatelli, Nicolas ^{[1
,2
]}

Tsunegi, Sumito ^{[1
,2
]}

Grollier, Julie ^{[1
,2
]}

Cros, Vincent ^{[1
,2
]}

Araujo, Flavio Abreu ^{[3
]}

Kubota, Hitoshi ^{[4
]}

Yakushiji, Kay ^{[4
]}

Fukushima, Akio ^{[4
]}

Yuasa, Shinji ^{[4
]}

机构：

[1] Unite Mixte Phys CNRS Thales, Palaiseau, France

[2] Univ Paris 11, Orsay, France

[3] Catholic Univ Louvain, Inst Condensed Matter & Nanosci, Louvain La Neuve, Belgium

[4] Natl Inst Adv Ind Sci & Technol, Spintron Res Ctr, Tsukuba, Ibaraki, Japan

来源：

PHYSICAL REVIEW APPLIED | 2014年 / 2卷 / 06期

关键词：

DRIVEN; COHERENCE;

D O I：

10.1103/PhysRevApplied.2.061001

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

By investigating thoroughly the tunable behavior of coupled modes, we highlight how it provides a means to tune the properties of spin-transfer nano-oscillators. We first demonstrate that the main features of the microwave signal associated with coupled vortex dynamics, i.e., frequency, spectral coherence, critical current, and mode localization, depend drastically on the relative vortex core polarities. Second, we report a large reduction of the nonlinear linewidth broadening obtained by changing the effective damping through the control of the core configuration. Such a level of control on the nonlinear behavior reinforces our choice to exploit the microwave properties of collective modes for applications in advanced spintronics devices for integrated telecommunication concerns.

引用

页数：6

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