Comparative study of coherent terahertz emission from Fe/Pt ferromagnetic heterostructures

Xiao Peng He; Pan Hui Huang; Xiao Yu Yang; Zuan Ming Jin; Shi Tao Lou; Xiao Lei Zhang; Qing Yuan Jin

doi:10.3788/COL201917.081601

Comparative study of coherent terahertz emission from Fe/Pt ferromagnetic heterostructures

Xiao Peng He
, Pan Hui Huang
, Xiao Yu Yang
, Zuan Ming Jin
, Shi Tao Lou
, Xiao Lei Zhang^*
, Qing Yuan Jin

^*Corresponding author for this work

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

4 Scopus citations

Abstract

The ultrafast spin dynamic of in-plane magnetized Fe/Pt films was investigated by terahertz emission spectroscopy. The amplitude of the emitted terahertz wave is proportional to the intensity of the exciting laser beams. Both the amplitude and polarity of the terahertz wave can be adjusted by modifying the external magnetic field. The dependency of the amplitude on external magnetic fields is coincident to the hysteresis loops of the sample. Also, the polarity of the terahertz wave is reversed, as the magnetization orientation is reversed. The superdiffusive transient spin current with an inverse spin Hall effect is attributed to the main mechanism of the terahertz emission.

Original language	English
Article number	081601
Journal	Chinese Optics Letters
Volume	17
Issue number	8
DOIs	https://doi.org/10.3788/COL201917.081601
State	Published - 10 Aug 2019
Externally published	Yes

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title = "Comparative study of coherent terahertz emission from Fe/Pt ferromagnetic heterostructures",

abstract = "The ultrafast spin dynamic of in-plane magnetized Fe/Pt films was investigated by terahertz emission spectroscopy. The amplitude of the emitted terahertz wave is proportional to the intensity of the exciting laser beams. Both the amplitude and polarity of the terahertz wave can be adjusted by modifying the external magnetic field. The dependency of the amplitude on external magnetic fields is coincident to the hysteresis loops of the sample. Also, the polarity of the terahertz wave is reversed, as the magnetization orientation is reversed. The superdiffusive transient spin current with an inverse spin Hall effect is attributed to the main mechanism of the terahertz emission.",

author = "He, \{Xiao Peng\} and Huang, \{Pan Hui\} and Yang, \{Xiao Yu\} and Jin, \{Zuan Ming\} and Lou, \{Shi Tao\} and Zhang, \{Xiao Lei\} and Jin, \{Qing Yuan\}",

note = "Publisher Copyright: {\textcopyright} 2019 Chinese Optics Letters.",

year = "2019",

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day = "10",

doi = "10.3788/COL201917.081601",

language = "英语",

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T1 - Comparative study of coherent terahertz emission from Fe/Pt ferromagnetic heterostructures

AU - He, Xiao Peng

AU - Huang, Pan Hui

AU - Yang, Xiao Yu

AU - Jin, Zuan Ming

AU - Lou, Shi Tao

AU - Zhang, Xiao Lei

AU - Jin, Qing Yuan

PY - 2019/8/10

Y1 - 2019/8/10

N2 - The ultrafast spin dynamic of in-plane magnetized Fe/Pt films was investigated by terahertz emission spectroscopy. The amplitude of the emitted terahertz wave is proportional to the intensity of the exciting laser beams. Both the amplitude and polarity of the terahertz wave can be adjusted by modifying the external magnetic field. The dependency of the amplitude on external magnetic fields is coincident to the hysteresis loops of the sample. Also, the polarity of the terahertz wave is reversed, as the magnetization orientation is reversed. The superdiffusive transient spin current with an inverse spin Hall effect is attributed to the main mechanism of the terahertz emission.

AB - The ultrafast spin dynamic of in-plane magnetized Fe/Pt films was investigated by terahertz emission spectroscopy. The amplitude of the emitted terahertz wave is proportional to the intensity of the exciting laser beams. Both the amplitude and polarity of the terahertz wave can be adjusted by modifying the external magnetic field. The dependency of the amplitude on external magnetic fields is coincident to the hysteresis loops of the sample. Also, the polarity of the terahertz wave is reversed, as the magnetization orientation is reversed. The superdiffusive transient spin current with an inverse spin Hall effect is attributed to the main mechanism of the terahertz emission.

UR - https://www.scopus.com/pages/publications/85071912790

U2 - 10.3788/COL201917.081601

DO - 10.3788/COL201917.081601

M3 - 文章

AN - SCOPUS:85071912790

SN - 1671-7694

VL - 17

JO - Chinese Optics Letters

JF - Chinese Optics Letters

IS - 8

M1 - 081601

ER -

Comparative study of coherent terahertz emission from Fe/Pt ferromagnetic heterostructures

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