Contributions from coherent and incoherent lattice excitations to ultrafast optical control of magnetic anisotropy of metallic films

Vladimir N. Kats; Tatiana L. Linnik; Alexey S. Salasyuk; Andrew W. Rushforth; Mu Wang; Peter Wadely; Andrey V. Akimov; Stuart A. Cavill; Václav Holý; Alexandra M. Kalashnikova; Alexey V. Scherbakov

doi:10.1117/12.2238020

Contributions from coherent and incoherent lattice excitations to ultrafast optical control of magnetic anisotropy of metallic films

Vladimir N. Kats, Tatiana L. Linnik, Alexey S. Salasyuk, Andrew W. Rushforth, Mu Wang, Peter Wadely, Andrey V. Akimov, Stuart A. Cavill, Václav Holý, Alexandra M. Kalashnikova^*, Alexey V. Scherbakov

^*Corresponding author for this work

Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Spin-lattice coupling is one of the most prominent interactions mediating response of spin ensemble to ultrafast optical excitation. Here we exploit optically generated coherent and incoherent phonons to drive coherent spin dynamics, i.e. precession, in thin films of magnetostrictive metal Galfenol. We demonstrate unambiguously that coherent phonons, also seen as dynamical strain generated due to picosecond lattice temperature raise, give raise to magnetic anisotropy changes of the optically excited magnetic film; and this contribution may be comparable to or even dominate over the contribution from the temperature increase itself, considered as incoherent phonons.

Original language	English
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
Publisher	SPIE
Volume	9835
ISBN (Print)	9781510600768
DOIs	https://doi.org/10.1117/12.2238020
Publication status	Published - 1 Jul 2016
Event	Ultrafast Bandgap Photonics - Baltimore, United States Duration: 18 Apr 2016 → 20 Apr 2016

Conference

Conference	Ultrafast Bandgap Photonics
Country/Territory	United States
City	Baltimore
Period	18/04/16 → 20/04/16

Keywords

laser-induced magnetization dynamics
magnetic anisotropy
magnetostrictive materials

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10.1117/12.2238020

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Kats, V. N., Linnik, T. L., Salasyuk, A. S., Rushforth, A. W., Wang, M., Wadely, P., Akimov, A. V., Cavill, S. A., Holý, V., Kalashnikova, A. M., & Scherbakov, A. V. (2016). Contributions from coherent and incoherent lattice excitations to ultrafast optical control of magnetic anisotropy of metallic films. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 9835). Article 98351Q SPIE. https://doi.org/10.1117/12.2238020

@inproceedings{102bb6e7b46d483d8c93a2c7f668bce9,

title = "Contributions from coherent and incoherent lattice excitations to ultrafast optical control of magnetic anisotropy of metallic films",

abstract = "Spin-lattice coupling is one of the most prominent interactions mediating response of spin ensemble to ultrafast optical excitation. Here we exploit optically generated coherent and incoherent phonons to drive coherent spin dynamics, i.e. precession, in thin films of magnetostrictive metal Galfenol. We demonstrate unambiguously that coherent phonons, also seen as dynamical strain generated due to picosecond lattice temperature raise, give raise to magnetic anisotropy changes of the optically excited magnetic film; and this contribution may be comparable to or even dominate over the contribution from the temperature increase itself, considered as incoherent phonons.",

keywords = "laser-induced magnetization dynamics, magnetic anisotropy, magnetostrictive materials",

author = "Kats, {Vladimir N.} and Linnik, {Tatiana L.} and Salasyuk, {Alexey S.} and Rushforth, {Andrew W.} and Mu Wang and Peter Wadely and Akimov, {Andrey V.} and Cavill, {Stuart A.} and V{\'a}clav Hol{\'y} and Kalashnikova, {Alexandra M.} and Scherbakov, {Alexey V.}",

year = "2016",

month = jul,

day = "1",

doi = "10.1117/12.2238020",

language = "English",

isbn = "9781510600768",

volume = "9835",

booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

publisher = "SPIE",

address = "United States",

note = "Ultrafast Bandgap Photonics ; Conference date: 18-04-2016 Through 20-04-2016",

}

Kats, VN, Linnik, TL, Salasyuk, AS, Rushforth, AW, Wang, M, Wadely, P, Akimov, AV, Cavill, SA, Holý, V, Kalashnikova, AM & Scherbakov, AV 2016, Contributions from coherent and incoherent lattice excitations to ultrafast optical control of magnetic anisotropy of metallic films. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 9835, 98351Q, SPIE, Ultrafast Bandgap Photonics, Baltimore, United States, 18/04/16. https://doi.org/10.1117/12.2238020

Contributions from coherent and incoherent lattice excitations to ultrafast optical control of magnetic anisotropy of metallic films. / Kats, Vladimir N.; Linnik, Tatiana L.; Salasyuk, Alexey S. et al.
Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9835 SPIE, 2016. 98351Q.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Contributions from coherent and incoherent lattice excitations to ultrafast optical control of magnetic anisotropy of metallic films

AU - Kats, Vladimir N.

AU - Linnik, Tatiana L.

AU - Salasyuk, Alexey S.

AU - Rushforth, Andrew W.

AU - Wang, Mu

AU - Wadely, Peter

AU - Akimov, Andrey V.

AU - Cavill, Stuart A.

AU - Holý, Václav

AU - Kalashnikova, Alexandra M.

AU - Scherbakov, Alexey V.

PY - 2016/7/1

Y1 - 2016/7/1

N2 - Spin-lattice coupling is one of the most prominent interactions mediating response of spin ensemble to ultrafast optical excitation. Here we exploit optically generated coherent and incoherent phonons to drive coherent spin dynamics, i.e. precession, in thin films of magnetostrictive metal Galfenol. We demonstrate unambiguously that coherent phonons, also seen as dynamical strain generated due to picosecond lattice temperature raise, give raise to magnetic anisotropy changes of the optically excited magnetic film; and this contribution may be comparable to or even dominate over the contribution from the temperature increase itself, considered as incoherent phonons.

AB - Spin-lattice coupling is one of the most prominent interactions mediating response of spin ensemble to ultrafast optical excitation. Here we exploit optically generated coherent and incoherent phonons to drive coherent spin dynamics, i.e. precession, in thin films of magnetostrictive metal Galfenol. We demonstrate unambiguously that coherent phonons, also seen as dynamical strain generated due to picosecond lattice temperature raise, give raise to magnetic anisotropy changes of the optically excited magnetic film; and this contribution may be comparable to or even dominate over the contribution from the temperature increase itself, considered as incoherent phonons.

KW - laser-induced magnetization dynamics

KW - magnetic anisotropy

KW - magnetostrictive materials

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U2 - 10.1117/12.2238020

DO - 10.1117/12.2238020

M3 - Conference contribution

AN - SCOPUS:84983343626

SN - 9781510600768

VL - 9835

BT - Proceedings of SPIE - The International Society for Optical Engineering

PB - SPIE

T2 - Ultrafast Bandgap Photonics

Y2 - 18 April 2016 through 20 April 2016

ER -

Contributions from coherent and incoherent lattice excitations to ultrafast optical control of magnetic anisotropy of metallic films

Abstract

Conference

Keywords

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