Large nonlinear ferromagnetic resonance shift and strong magnon-magnon coupling in Ni80Fe20 nanocross array

被引：29

作者：

Adhikari, Kartik ^{[1
]}

Sahoo, Sourav ^{[1
]}

Mondal, Amrit Kumar ^{[1
]}

Otani, Yoshichika ^{[2
,3
]}

Barman, Anjan ^{[1
]}

机构：

[1] SN Bose Natl Ctr Basic Sci, Dept Condensed Matter Phys & Mat Sci, Block JD,Sect 3, Kolkata 700106, India

[2] CEMS RIKEN, 2-1 Hirosawa, Wako, Saitama 3510198, Japan

[3] Univ Tokyo, Inst Solid State Phys, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778581, Japan

来源：

PHYSICAL REVIEW B | 2020年 / 101卷 / 05期

关键词：

INSTABILITIES; MICROWAVE;

D O I：

10.1103/PhysRevB.101.054406

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report microwave-power-driven strong magnon-magnon coupling in Ni80Fe20 nanocross array with large anticrossing gaps up to 1.03 GHz. We also observe microwave-driven large nonlinear shift in ferromagnetic resonance (FMR) frequency with its sign dependent on the strength of bias magnetic field. A drastic enhancement of inter-nanocross-dynamic dipolar interaction results in the anticrossing, while variation in internal spin texture leads to the nonlinear FMR shift. The tunable coupling strength and nonlinearity by microwave power ushers externally controlled nonlinear magnonic devices.

引用

页数：6

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