Observation of magnetoconductivity with terahertz probes for ferromagnetic Fe films

Lin Huang; Yunxiu Zhao; Nguyen Le Thi; Sang Hyuk Lee; Zhi Peng; Seongheun Kim; Hee Jun Shin; Jaehun Park; Hyun Joong Kim; Jung Il Hong; Junhyeok Bang; Hyun Seok Lee; Kyung Wan Kim; Dong Hyun Kim

doi:10.1016/j.cap.2022.06.014

Observation of magnetoconductivity with terahertz probes for ferromagnetic Fe films

Lin Huang, Yunxiu Zhao, Nguyen Le Thi, Sang Hyuk Lee, Zhi Peng, Seongheun Kim, Hee Jun Shin, Jaehun Park, Hyun Joong Kim, Jung Il Hong, Junhyeok Bang, Hyun Seok Lee, Kyung Wan Kim, Dong Hyun Kim

Department of Physics and Chemistry

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

2 Scopus citations

Abstract

Ultrafast characterization of spin-dependent transport behavior in ferromagnetic systems without contact probes has been of strong demand, recently. We have experimentally investigated spin-dependent complex conductivity for ferromagnetic Fe films of various thickness by means of terahertz time-domain transmission spectroscopy. Comparison of the transmitted terahertz wave amplitude and the spin-dependent conductivity reveals that the magnetization state of films effectively determines the complex conductivity. Non-invasive observation of spin-dependent conductivity by contact-free terahertz probe method is proven to be promising in further investigating spintronic materials, particularly on an ultrafast timescale.

Original language	English
Pages (from-to)	81-85
Number of pages	5
Journal	Current Applied Physics
Volume	41
DOIs	https://doi.org/10.1016/j.cap.2022.06.014
State	Published - Sep 2022

Bibliographical note

Publisher Copyright:
© 2022 Korean Physical Society

Keywords

Drude model
Magnetotransport
Spin-dependent conductivity
Terahertz time-domain spectroscopy

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10.1016/j.cap.2022.06.014

Cite this

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title = "Observation of magnetoconductivity with terahertz probes for ferromagnetic Fe films",

abstract = "Ultrafast characterization of spin-dependent transport behavior in ferromagnetic systems without contact probes has been of strong demand, recently. We have experimentally investigated spin-dependent complex conductivity for ferromagnetic Fe films of various thickness by means of terahertz time-domain transmission spectroscopy. Comparison of the transmitted terahertz wave amplitude and the spin-dependent conductivity reveals that the magnetization state of films effectively determines the complex conductivity. Non-invasive observation of spin-dependent conductivity by contact-free terahertz probe method is proven to be promising in further investigating spintronic materials, particularly on an ultrafast timescale.",

keywords = "Drude model, Magnetotransport, Spin-dependent conductivity, Terahertz time-domain spectroscopy",

author = "Lin Huang and Yunxiu Zhao and {Le Thi}, Nguyen and Lee, {Sang Hyuk} and Zhi Peng and Seongheun Kim and Shin, {Hee Jun} and Jaehun Park and Kim, {Hyun Joong} and Hong, {Jung Il} and Junhyeok Bang and Lee, {Hyun Seok} and Kim, {Kyung Wan} and Kim, {Dong Hyun}",

note = "Publisher Copyright: {\textcopyright} 2022 Korean Physical Society",

year = "2022",

month = sep,

doi = "10.1016/j.cap.2022.06.014",

language = "English",

volume = "41",

pages = "81--85",

journal = "Current Applied Physics",

issn = "1567-1739",

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T1 - Observation of magnetoconductivity with terahertz probes for ferromagnetic Fe films

AU - Huang, Lin

AU - Zhao, Yunxiu

AU - Le Thi, Nguyen

AU - Lee, Sang Hyuk

AU - Peng, Zhi

AU - Kim, Seongheun

AU - Shin, Hee Jun

AU - Park, Jaehun

AU - Kim, Hyun Joong

AU - Hong, Jung Il

AU - Bang, Junhyeok

AU - Lee, Hyun Seok

AU - Kim, Kyung Wan

AU - Kim, Dong Hyun

PY - 2022/9

Y1 - 2022/9

N2 - Ultrafast characterization of spin-dependent transport behavior in ferromagnetic systems without contact probes has been of strong demand, recently. We have experimentally investigated spin-dependent complex conductivity for ferromagnetic Fe films of various thickness by means of terahertz time-domain transmission spectroscopy. Comparison of the transmitted terahertz wave amplitude and the spin-dependent conductivity reveals that the magnetization state of films effectively determines the complex conductivity. Non-invasive observation of spin-dependent conductivity by contact-free terahertz probe method is proven to be promising in further investigating spintronic materials, particularly on an ultrafast timescale.

AB - Ultrafast characterization of spin-dependent transport behavior in ferromagnetic systems without contact probes has been of strong demand, recently. We have experimentally investigated spin-dependent complex conductivity for ferromagnetic Fe films of various thickness by means of terahertz time-domain transmission spectroscopy. Comparison of the transmitted terahertz wave amplitude and the spin-dependent conductivity reveals that the magnetization state of films effectively determines the complex conductivity. Non-invasive observation of spin-dependent conductivity by contact-free terahertz probe method is proven to be promising in further investigating spintronic materials, particularly on an ultrafast timescale.

KW - Drude model

KW - Magnetotransport

KW - Spin-dependent conductivity

KW - Terahertz time-domain spectroscopy

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U2 - 10.1016/j.cap.2022.06.014

DO - 10.1016/j.cap.2022.06.014

M3 - Article

AN - SCOPUS:85133461221

SN - 1567-1739

VL - 41

SP - 81

EP - 85

JO - Current Applied Physics

JF - Current Applied Physics

ER -

Observation of magnetoconductivity with terahertz probes for ferromagnetic Fe films

Abstract

Bibliographical note

Keywords

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