Coherent elastic excitation of spin waves

被引：99

作者：

Kamra, Akashdeep ^{[1
]}

Keshtgar, Hedyeh ^{[2
]}

Yan, Peng ^{[1
]}

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

机构：

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

[2] Inst Adv Studies Basic Sci, Zanjan 45195, Iran

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

[4] Tohoku Univ, WPI AIMR, Sendai, Miyagi 9808577, Japan

来源：

PHYSICAL REVIEW B | 2015年 / 91卷 / 10期

关键词：

YTTRIUM IRON-GARNET;

D O I：

10.1103/PhysRevB.91.104409

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We model the injection of elastic waves into a ferromagnetic film (F) by a nonmagnetic transducer (N). We compare the configurations in which the magnetization is normal and parallel to the wave propagation. The lack of axial symmetry in the former results in the emergence of evanescent interface states. We compute the energy-flux transmission across the N broken vertical bar F interface and sound-induced magnetization dynamics in the ferromagnet. We predict efficient acoustically induced pumping of spin current into a metal contact attached to F.

引用

页数：9

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