Einstein-de Haas phase shifts in surface acoustic waves

Shoma Tateno; Yuki Kurimune; Mamoru Matsuo; Kazuto Yamanoi; Yukio Nozaki

doi:10.1103/PhysRevB.104.L020404

Einstein-de Haas phase shifts in surface acoustic waves

Shoma Tateno, Yuki Kurimune, Mamoru Matsuo, Kazuto Yamanoi, Yukio Nozaki

Department of Physics

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

We demonstrate the phase shift of the Rayleigh-type surface acoustic wave (RSAW) in a ferromagnetic Ni81Fe19 film based on the gyromagnetic Einstein-de Haas (EdH) torque that can be attributed to the back action of spin-wave excitation. The EdH torque modulates the transverse velocity of the bulk acoustic wave that causes the bipolar phase shift of RSAW. When compared with a magnetoelastic torque, the phase shift can be more prominently enhanced by increasing the frequency. The gyromagnetic torque in the RSAW paves the way for controlling spin-mechatronics devices without magnetoelastic torque which is specific to a certain material.

Original language	English
Article number	L020404
Journal	Physical Review B
Volume	104
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevB.104.L020404
Publication status	Published - 2021 Jul 1

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1103/PhysRevB.104.L020404

Cite this

@article{67d7106424bb4d7882f2b3d5ba4193c3,

title = "Einstein-de Haas phase shifts in surface acoustic waves",

abstract = "We demonstrate the phase shift of the Rayleigh-type surface acoustic wave (RSAW) in a ferromagnetic Ni81Fe19 film based on the gyromagnetic Einstein-de Haas (EdH) torque that can be attributed to the back action of spin-wave excitation. The EdH torque modulates the transverse velocity of the bulk acoustic wave that causes the bipolar phase shift of RSAW. When compared with a magnetoelastic torque, the phase shift can be more prominently enhanced by increasing the frequency. The gyromagnetic torque in the RSAW paves the way for controlling spin-mechatronics devices without magnetoelastic torque which is specific to a certain material.",

author = "Shoma Tateno and Yuki Kurimune and Mamoru Matsuo and Kazuto Yamanoi and Yukio Nozaki",

note = "Funding Information: The authors would like to thank J. Fujimoto for his valuable discussions. This work was partially supported by JSPS KAKENHI Grants No. JP18H03867, No. JP20H01863, and No. JP21H04565 and JST CREST Grant No. JPMJCR19J4, Japan the Priority Program of the Chinese Academy of Sciences, Grant No. XDB28000000. Publisher Copyright: {\textcopyright} 2021 American Physical Society.",

year = "2021",

month = jul,

day = "1",

doi = "10.1103/PhysRevB.104.L020404",

language = "English",

volume = "104",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

number = "2",

}

TY - JOUR

T1 - Einstein-de Haas phase shifts in surface acoustic waves

AU - Tateno, Shoma

AU - Kurimune, Yuki

AU - Matsuo, Mamoru

AU - Yamanoi, Kazuto

AU - Nozaki, Yukio

N1 - Funding Information: The authors would like to thank J. Fujimoto for his valuable discussions. This work was partially supported by JSPS KAKENHI Grants No. JP18H03867, No. JP20H01863, and No. JP21H04565 and JST CREST Grant No. JPMJCR19J4, Japan the Priority Program of the Chinese Academy of Sciences, Grant No. XDB28000000. Publisher Copyright: © 2021 American Physical Society.

PY - 2021/7/1

Y1 - 2021/7/1

N2 - We demonstrate the phase shift of the Rayleigh-type surface acoustic wave (RSAW) in a ferromagnetic Ni81Fe19 film based on the gyromagnetic Einstein-de Haas (EdH) torque that can be attributed to the back action of spin-wave excitation. The EdH torque modulates the transverse velocity of the bulk acoustic wave that causes the bipolar phase shift of RSAW. When compared with a magnetoelastic torque, the phase shift can be more prominently enhanced by increasing the frequency. The gyromagnetic torque in the RSAW paves the way for controlling spin-mechatronics devices without magnetoelastic torque which is specific to a certain material.

AB - We demonstrate the phase shift of the Rayleigh-type surface acoustic wave (RSAW) in a ferromagnetic Ni81Fe19 film based on the gyromagnetic Einstein-de Haas (EdH) torque that can be attributed to the back action of spin-wave excitation. The EdH torque modulates the transverse velocity of the bulk acoustic wave that causes the bipolar phase shift of RSAW. When compared with a magnetoelastic torque, the phase shift can be more prominently enhanced by increasing the frequency. The gyromagnetic torque in the RSAW paves the way for controlling spin-mechatronics devices without magnetoelastic torque which is specific to a certain material.

UR - http://www.scopus.com/inward/record.url?scp=85109904122&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85109904122&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.104.L020404

DO - 10.1103/PhysRevB.104.L020404

M3 - Article

AN - SCOPUS:85109904122

SN - 2469-9950

VL - 104

JO - Physical Review B

JF - Physical Review B

IS - 2

M1 - L020404

ER -

Einstein-de Haas phase shifts in surface acoustic waves

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this