Intriguing Hysteresis Dynamics in Ultrafast Photo-Induced Magnetization
SCIE
SCOPUS
- Title
- Intriguing Hysteresis Dynamics in Ultrafast Photo-Induced Magnetization
- Authors
- Shim, Je-Ho; Kim, Chul-Hoon; Piao, Hong-Guang; Lee, Sang-Hyuk; Lee, Kyung Min; Jeong, Jong-Ryul; Park, Seung-Young; Choi, Yeon Suk; Kim, Dong Eon; Kim, Dong-Hyun
- Date Issued
- 2019-09
- Publisher
- WILEY-V C H VERLAG GMBH
- Abstract
- Time-resolved magneto-optical Kerr effect measurement is carried out to determine ultrafast hysteresis behavior during a photo-induced demagnetization/remagnetization process for Co/Pt ferromagnetic multilayers. Due to the stroboscopic measurement scheme, hysteresis curve measured by a pump-probe technique exhibits an irreversible behavior, repeatedly reset to a metastable hysteresis state at each stroboscopic measurement, observed as the reduction of the coercivity. It is demonstrated that the stroboscopically measured hysteresis and the coercivity could be a stable parameter in describing the ultrafast photo-induced spin dynamics for both reversible and irreversible behaviors. Moreover, it is found that an unusual coercivity behavior exists together with a nontrivial magnetization change under external fields comparable to the coercivity of the sample.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/101115
- DOI
- 10.1002/pssb.201900307
- ISSN
- 0370-1972
- Article Type
- Article
- Citation
- PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2019-09
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.