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

4 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

Access to Document

10.1016/j.cap.2022.06.014

Cite this

@article{5c46c3c6307e423aab7081d78aa91929,

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",

publisher = "Elsevier B.V.",

}

TY - JOUR

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

UR - https://www.scopus.com/pages/publications/85133461221

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

Access to Document

Other files and links

Fingerprint

Cite this