Probing nonlinear magnetization dynamics in Fe/MgO(001) film by all optical pump-probe technique

Wei He; Bo Hu; Qing Feng Zhan; Xiang Qun Zhang; Zhao Hua Cheng

doi:10.1063/1.4871006

Probing nonlinear magnetization dynamics in Fe/MgO(001) film by all optical pump-probe technique

Wei He
, Bo Hu
, Qing Feng Zhan
, Xiang Qun Zhang
, Zhao Hua Cheng

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

13 Scopus citations

Abstract

An all-optical pump-probe technique has been employed to investigate the nonlinear magnetization dynamics of a 10 nm Fe/MgO(001) thin film in time domain. The magnetization precession was excited by pump-laser pulses and modulated by laser fluence variations. With increasing the laser fluence up to 7.1 mJ/cm², in addition to the uniform precession mode, a second harmonic signal was detected. The time evolution of the second harmonic signal was obtained in time-frequency domain. Based on the Landau-Lifshitz-Gilbert equation, the numerical simulation was performed to reproduce the observed the frequency doubling behaviors in Fe/MgO(001) film.

Original language	English
Article number	142405
Journal	Applied Physics Letters
Volume	104
Issue number	14
DOIs	https://doi.org/10.1063/1.4871006
State	Published - 7 Apr 2014
Externally published	Yes

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10.1063/1.4871006

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@article{b117df4dd675453e9089b93ca9cb55eb,

title = "Probing nonlinear magnetization dynamics in Fe/MgO(001) film by all optical pump-probe technique",

abstract = "An all-optical pump-probe technique has been employed to investigate the nonlinear magnetization dynamics of a 10 nm Fe/MgO(001) thin film in time domain. The magnetization precession was excited by pump-laser pulses and modulated by laser fluence variations. With increasing the laser fluence up to 7.1 mJ/cm2, in addition to the uniform precession mode, a second harmonic signal was detected. The time evolution of the second harmonic signal was obtained in time-frequency domain. Based on the Landau-Lifshitz-Gilbert equation, the numerical simulation was performed to reproduce the observed the frequency doubling behaviors in Fe/MgO(001) film.",

author = "Wei He and Bo Hu and Zhan, \{Qing Feng\} and Zhang, \{Xiang Qun\} and Cheng, \{Zhao Hua\}",

year = "2014",

month = apr,

day = "7",

doi = "10.1063/1.4871006",

language = "英语",

volume = "104",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

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T1 - Probing nonlinear magnetization dynamics in Fe/MgO(001) film by all optical pump-probe technique

AU - He, Wei

AU - Hu, Bo

AU - Zhan, Qing Feng

AU - Zhang, Xiang Qun

AU - Cheng, Zhao Hua

PY - 2014/4/7

Y1 - 2014/4/7

N2 - An all-optical pump-probe technique has been employed to investigate the nonlinear magnetization dynamics of a 10 nm Fe/MgO(001) thin film in time domain. The magnetization precession was excited by pump-laser pulses and modulated by laser fluence variations. With increasing the laser fluence up to 7.1 mJ/cm2, in addition to the uniform precession mode, a second harmonic signal was detected. The time evolution of the second harmonic signal was obtained in time-frequency domain. Based on the Landau-Lifshitz-Gilbert equation, the numerical simulation was performed to reproduce the observed the frequency doubling behaviors in Fe/MgO(001) film.

AB - An all-optical pump-probe technique has been employed to investigate the nonlinear magnetization dynamics of a 10 nm Fe/MgO(001) thin film in time domain. The magnetization precession was excited by pump-laser pulses and modulated by laser fluence variations. With increasing the laser fluence up to 7.1 mJ/cm2, in addition to the uniform precession mode, a second harmonic signal was detected. The time evolution of the second harmonic signal was obtained in time-frequency domain. Based on the Landau-Lifshitz-Gilbert equation, the numerical simulation was performed to reproduce the observed the frequency doubling behaviors in Fe/MgO(001) film.

UR - https://www.scopus.com/pages/publications/84898946387

U2 - 10.1063/1.4871006

DO - 10.1063/1.4871006

M3 - 文章

AN - SCOPUS:84898946387

SN - 0003-6951

VL - 104

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 14

M1 - 142405

ER -

Probing nonlinear magnetization dynamics in Fe/MgO(001) film by all optical pump-probe technique

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