Cited 3 time in webofscience Cited 3 time in scopus

Universal field-tunable terahertz emission by ultrafast photoinduced demagnetization in Fe, Ni, and Co ferromagnetic films

Title
Universal field-tunable terahertz emission by ultrafast photoinduced demagnetization in Fe, Ni, and Co ferromagnetic films
Authors
Huang, LinLee, Sang-HyukKim, Seon-DaeShim, Je-HoShin, Hee JunKim, SeongheunPark, JaehunPark, Seung-YoungChoi, Yeon SukKim, Hyun-JoongHong, Jung-IlKim, Dong EonKim, Dong-Hyun
DGIST Authors
Huang, Lin; Lee, Sang-Hyuk; Kim, Seon-Dae; Shim, Je-Ho; Shin, Hee Jun; Kim, Seongheun; Park, Jaehun; Park, Seung-Young; Choi, Yeon Suk; Kim, Hyun-Joong; Hong, Jung-Il; Kim, Dong Eon; Kim, Dong-Hyun
Issue Date
2020-09
Citation
Scientific Reports, 10(1), 15843
Type
Article
Article Type
Article
ISSN
2045-2322
Abstract
We report a universal terahertz (THz) emission behavior from simple Ni, Fe, and Co metallic ferromagnetic films, triggered by the femtosecond laser pulse and subsequent photoinduced demagnetization on an ultrafast time scale. THz emission behavior in ferromagnetic films is found to be consistent with initial magnetization states controlled by external fields, where the hysteresis of the maximal THz emission signal is observed to be well-matched with the magnetic hysteresis curve. It is experimentally demonstrated that the ultrafast THz emission by the photoinduced demagnetization is controllable in a simple way by external fields as well as pump fluences. © 2020, The Author(s).
URI
http://hdl.handle.net/20.500.11750/12611
DOI
10.1038/s41598-020-72855-1
Publisher
Nature Publishing Group
Related Researcher
  • Author Hong, Jung-Il Spin Nanotech Laboratory
  • Research Interests Electric and Magnetic Properties of Nanostructured Materials; Spintronics
Files:
Collection:
Department of Emerging Materials ScienceSpin Nanotech Laboratory1. Journal Articles


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