Detecting Phase-Resolved Magnetization Dynamics by Magneto-Optic Effects at 1550 nm Wavelength
| Autor: | Xufeng Zhang, Mouhamad Hammami, Sawyer Hall, Axel Hoffmann, Peng Li, Yi Li, Wei Zhang, Valentine Novosad, Thomas Sebastian, John E. Pearson, Yuzan Xiong, Gopalan Srinivasan, Hongwei Qu, Rao Bidthanapally, Joseph Sklenar |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Permalloy Magnetization dynamics Materials science business.industry 01 natural sciences Nanomagnet Electronic Optical and Magnetic Materials symbols.namesake Magnetization 0103 physical sciences Faraday effect symbols Optoelectronics Condensed Matter::Strongly Correlated Electrons Electrical and Electronic Engineering business Magneto Frequency modulation Spin-½ |
| Zdroj: | IEEE Transactions on Magnetics. 57:1-7 |
| ISSN: | 1941-0069 0018-9464 |
| DOI: | 10.1109/tmag.2020.3013063 |
| Popis: | We demonstrate the detection of phase-resolved magnetization dynamics with combinatorial magneto-optic Kerr and Faraday effects. The method uses a continuous-wave laser that is amplitude-modulated at the spin dynamic frequencies and thus allows for coherent tracking of the spin dynamics, akin a “lock-in”-type measurement. In particular, our method, using a single 1550 nm wavelength, probes simultaneously the ferromagnetic (FM) resonance of Y3Fe5O12 (YIG) and Permalloy (Py = Ni80Fe20) in a YIG-Py heterostructure. The fiber-based magneto-optic components also have the advantage of being made into a compact, tabletop or even portable system with yet robust measurement performances. We believe that our method will be found useful in studying hybrid quantum magnonic systems and/or investigating phase-resolved spin dynamics in nanomagnet structures involving both FM insulators and metals. |
| Databáze: | OpenAIRE |
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