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Magnetic imaging with femtosecond temporal resolution
- A scanning Kerr microscope with a temporal resolution of <230 fs and a spatial resolution of 210 nm is presented. Equipped with a large temporal and spatial scanning range of 8 ns and 320 μm, respectively, the microscope allows studying nonuniform magnetization dynamics on many different time scales over a large area. For demonstration, we study the magnetization dynamics in Fe/Gd multilayer dot arrays exhibiting a spin reorientation transition (SRT) on three different time scales, namely, femtosecond, picosecond, and nanosecond scales. The dynamics on all time scales varies from one dot to another. This is attributed to the high sensitivity of the SRT to the variations of the layer thicknesses and the Fe/Gd interface structure.
Author: | Jie Li, Min-Sang Lee, Björn Redeker, Arndt Remhof, Edward Amaladass, Christoph Hassel, Thomas EimüllerGND |
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DOI: | https://doi.org/10.1063/1.3170448 |
Identifier: | 0034-6748 OPAC HS OPAC extern |
Parent Title (English): | Review of Scientific Instruments |
Publisher: | AIP Publishing |
Document Type: | Article |
Language: | English |
Date of Publication (online): | 2009/07/14 |
Year of first Publication: | 2009 |
Volume: | 80 |
Issue: | 7 |
Article Number: | 073703 |
Number of pages: | 5 Seiten |
First Page: | 073703-1 |
Last Page: | 073703-5 |
Institutes: | Fakultät Maschinenbau |
Dewey Decimal Classification: | 6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften |
Publication Lists: | Eimüller, Thomas |
Publication reviewed: | begutachtet |
Release Date: | 2020/09/07 |