2019年10月3日
Element-selective tracking ultrafast demagnetization process in Co/Pt multilayer thin films by the resonant magneto-optical Kerr effect
APPLIED PHYSICS LETTERS
- 巻
- 116
- 号
- 17
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1063/5.0005393
- 出版者・発行元
- AMER INST PHYSICS
We examined the photo-induced dynamics of ferromagnetic Co/Pt thin films
demonstrating perpendicular magnetic anisotropy with element specificity using
resonant polar magneto-optical Kerr effect measurements at Pt~N${}_{6,7}$ and
Co~M${}_{2,3}$ edges with an x-ray free electron laser. The obtained results
showed a clear element dependence of photo-induced demagnetization time scales:
$\tau_\textrm{demag.}^\textrm{Co}=80\pm60~\textrm{fs}$ and
$\tau_\textrm{demag.}^\textrm{Pt}=640\pm140~\textrm{fs}$. This dependence is
explained by the induced moment of the Pt atom by current flow from the Co
layer through the interfaces. The observed magnetization dynamics of Co and Pt
can be attributed to the characteristics of photo-induced Co/Pt thin film
phenomena including all-optical switching.
demonstrating perpendicular magnetic anisotropy with element specificity using
resonant polar magneto-optical Kerr effect measurements at Pt~N${}_{6,7}$ and
Co~M${}_{2,3}$ edges with an x-ray free electron laser. The obtained results
showed a clear element dependence of photo-induced demagnetization time scales:
$\tau_\textrm{demag.}^\textrm{Co}=80\pm60~\textrm{fs}$ and
$\tau_\textrm{demag.}^\textrm{Pt}=640\pm140~\textrm{fs}$. This dependence is
explained by the induced moment of the Pt atom by current flow from the Co
layer through the interfaces. The observed magnetization dynamics of Co and Pt
can be attributed to the characteristics of photo-induced Co/Pt thin film
phenomena including all-optical switching.
- リンク情報
-
- DOI
- https://doi.org/10.1063/5.0005393
- arXiv
- http://arxiv.org/abs/arXiv:1910.01556
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000531371400001&DestApp=WOS_CPL
- URL
- http://arxiv.org/abs/1910.01556v1
- URL
- http://arxiv.org/pdf/1910.01556v1 本文へのリンクあり
- ID情報
-
- DOI : 10.1063/5.0005393
- ISSN : 0003-6951
- eISSN : 1077-3118
- ORCIDのPut Code : 64297995
- arXiv ID : arXiv:1910.01556
- Web of Science ID : WOS:000531371400001