Chiral excitation of spin waves in ferromagnetic films by magnetic nanowire gratings

被引：40

作者：

Yu, Tao ^{[1
]}

Li, Chuanpu ^{[2
]}

Yu, Haiming ^{[2
]}

Blanter, Yaroslav M. ^{[1
]}

Bauer, Gerrit E. W. ^{[1
,3
,4
]}

机构：

[1] Delft Univ Technol, Kavli Inst NanoSci, NL-2628 CJ Delft, Netherlands

[2] Beihang Univ, Fert Beijing Inst, BDBC, Sch Microelect, Beijing 100191, Peoples R China

[3] Tohoku Univ, Inst Mat Res & WPI AIMR, Sendai, Miyagi 9808577, Japan

[4] Tohoku Univ, CSRN, Sendai, Miyagi 9808577, Japan

来源：

PHYSICAL REVIEW B | 2019年 / 99卷 / 13期

关键词：

MAGNETOSTATIC MODES; ORBIT INTERACTION;

D O I：

10.1103/PhysRevB.99.134424

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We theoretically investigate the interlayer dipolar and exchange couplings between an array of metallic magnetic nanowires grown on top of an extended ultrathin yttrium iron garnet film. The calculated interlayer dipolar coupling agrees with observed anticrossings [Chen et al., Phys. Rev. Lett. 120, 217202 (2018)], concluding that the interlayer exchange coupling is suppressed by a spacer layer between the nanowires and film for Ni, but not necessarily for Co. The Kittel mode in the nanowire array couples chirally to spin waves in the film, even though Damon-Eshbach surface modes do not exist. The chirality can be suppressed by a strong interlayer exchange coupling.

引用

页数：12

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