Spin-orbit enhanced demagnetization rate in Co/Pt-multilayers

被引：69
|
作者：
Kuiper, K. C. [1 ]
Roth, T. [2 ,3 ]
Schellekens, A. J. [1 ]
Schmitt, O. [2 ,3 ]
Koopmans, B. [1 ]
Cinchetti, M. [2 ,3 ]
Aeschlimann, M. [2 ,3 ]
机构：
[1] Eindhoven Univ Technol, Dept Appl Phys, Ctr NanoMat, NL-5600 MB Eindhoven, Netherlands
[2] Univ Kaiserslautern, Dept Phys, D-67663 Kaiserslautern, Germany
[3] Univ Kaiserslautern, Res Ctr OPTIMAS, D-67663 Kaiserslautern, Germany
来源：
APPLIED PHYSICS LETTERS | 2014年 / 105卷 / 20期
关键词：
ULTRAFAST; TEMPERATURE; DYNAMICS; NICKEL; HEAT;
D O I：
10.1063/1.4902069
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In order to explore the role of enhanced spin-orbit interactions on the laser-induced ultrafast magnetization dynamics, we performed a comparative study on cobalt thin films and Co/Pt multilayers. We show that the presence of the Co/Pt interfaces gives rise to a three-fold faster demagnetization upon femtosecond laser heating. Experimental data for a wide range of laser fluences are analyzed using the Microscopic 3-Temperature Model. We find that the Elliott-Yafet spin-flip scattering in the multilayer structure is increased by at least a factor of four with respect to the elementary Co film. (C) 2014 AIP Publishing LLC.
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页数：4
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