Optically excited spin pumping mediating collective magnetization dynamics in a spin valve structure

A. P. Danilov; A. V. Scherbakov; B. A. Glavin; T. L. Linnik; A. M. Kalashnikova; L. A. Shelukhin; D. P. Pattnaik; A. W. Rushforth; C. J. Love; S. A. Cavill; D. R. Yakovlev; M. Bayer

doi:10.1103/PhysRevB.98.060406

Optically excited spin pumping mediating collective magnetization dynamics in a spin valve structure

A. P. Danilov, A. V. Scherbakov, B. A. Glavin, T. L. Linnik, A. M. Kalashnikova, L. A. Shelukhin, D. P. Pattnaik, A. W. Rushforth, C. J. Love, S. A. Cavill, D. R. Yakovlev, M. Bayer

Physics

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

Abstract

We demonstrate spin pumping, i.e., the generation of a pure spin current by precessing magnetization, without the application of microwave radiation commonly used in spin pumping experiments. We use femtosecond laser pulses to simultaneously launch the magnetization precession in each of two ferromagnetic layers of a galfenol-based spin valve and monitor the temporal evolution of the magnetizations. The spin currents generated by the precession cause a dynamic coupling of the two layers. This coupling has a dissipative character and is especially efficient when the precession frequencies in the two layers are in resonance, where coupled modes with strongly different decay rates are formed.

Original language	English
Article number	060302
Number of pages	6
Journal	Physical Review B
Volume	98
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.98.060406
Publication status	Published - 13 Aug 2018

Bibliographical note

Access to Document

10.1103/PhysRevB.98.060406

PhysRevB.98.060406
© 2018, American Physical Society. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details
Final published version, 615 KBLicence: Unspecified

Cite this

Danilov, A. P., Scherbakov, A. V., Glavin, B. A., Linnik, T. L., Kalashnikova, A. M., Shelukhin, L. A., Pattnaik, D. P., Rushforth, A. W., Love, C. J., Cavill, S. A., Yakovlev, D. R., & Bayer, M. (2018). Optically excited spin pumping mediating collective magnetization dynamics in a spin valve structure. Physical Review B, 98(6), Article 060302. https://doi.org/10.1103/PhysRevB.98.060406

@article{6352a9f0c8a94367bece469560be4d15,

title = "Optically excited spin pumping mediating collective magnetization dynamics in a spin valve structure",

abstract = "We demonstrate spin pumping, i.e., the generation of a pure spin current by precessing magnetization, without the application of microwave radiation commonly used in spin pumping experiments. We use femtosecond laser pulses to simultaneously launch the magnetization precession in each of two ferromagnetic layers of a galfenol-based spin valve and monitor the temporal evolution of the magnetizations. The spin currents generated by the precession cause a dynamic coupling of the two layers. This coupling has a dissipative character and is especially efficient when the precession frequencies in the two layers are in resonance, where coupled modes with strongly different decay rates are formed.",

author = "Danilov, {A. P.} and Scherbakov, {A. V.} and Glavin, {B. A.} and Linnik, {T. L.} and Kalashnikova, {A. M.} and Shelukhin, {L. A.} and Pattnaik, {D. P.} and Rushforth, {A. W.} and Love, {C. J.} and Cavill, {S. A.} and Yakovlev, {D. R.} and M. Bayer",

note = "{\textcopyright} 2018, American Physical Society. Uploaded in accordance with the publisher{\textquoteright}s self-archiving policy. Further copying may not be permitted; contact the publisher for details.",

year = "2018",

month = aug,

day = "13",

doi = "10.1103/PhysRevB.98.060406",

language = "English",

volume = "98",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

number = "6",

}

TY - JOUR

T1 - Optically excited spin pumping mediating collective magnetization dynamics in a spin valve structure

AU - Danilov, A. P.

AU - Scherbakov, A. V.

AU - Glavin, B. A.

AU - Linnik, T. L.

AU - Kalashnikova, A. M.

AU - Shelukhin, L. A.

AU - Pattnaik, D. P.

AU - Rushforth, A. W.

AU - Love, C. J.

AU - Cavill, S. A.

AU - Yakovlev, D. R.

AU - Bayer, M.

PY - 2018/8/13

Y1 - 2018/8/13

N2 - We demonstrate spin pumping, i.e., the generation of a pure spin current by precessing magnetization, without the application of microwave radiation commonly used in spin pumping experiments. We use femtosecond laser pulses to simultaneously launch the magnetization precession in each of two ferromagnetic layers of a galfenol-based spin valve and monitor the temporal evolution of the magnetizations. The spin currents generated by the precession cause a dynamic coupling of the two layers. This coupling has a dissipative character and is especially efficient when the precession frequencies in the two layers are in resonance, where coupled modes with strongly different decay rates are formed.

AB - We demonstrate spin pumping, i.e., the generation of a pure spin current by precessing magnetization, without the application of microwave radiation commonly used in spin pumping experiments. We use femtosecond laser pulses to simultaneously launch the magnetization precession in each of two ferromagnetic layers of a galfenol-based spin valve and monitor the temporal evolution of the magnetizations. The spin currents generated by the precession cause a dynamic coupling of the two layers. This coupling has a dissipative character and is especially efficient when the precession frequencies in the two layers are in resonance, where coupled modes with strongly different decay rates are formed.

UR - http://www.scopus.com/inward/record.url?scp=85051768335&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.98.060406

DO - 10.1103/PhysRevB.98.060406

M3 - Article

AN - SCOPUS:85051768335

SN - 2469-9950

VL - 98

JO - Physical Review B

JF - Physical Review B

IS - 6

M1 - 060302

ER -

Optically excited spin pumping mediating collective magnetization dynamics in a spin valve structure

Abstract

Bibliographical note

Access to Document

Other files and links

Cite this