126822 20241125101142.0 doi 10.1103/PhysRevB.107.174420 sideral 134274 ART-2023-134274 eng Sandoval, Miguel A. Cascales Fourier-space generalized magneto-optical ellipsometry 2023 Access copy available to the general public Unrestricted The magneto-optical Kerr effect (MOKE) is widely exploited in laboratory-based setups for the study of thin films and nanostructures, providing magnetic characterization with good spatial and temporal resolutions. Due to the complex coupling of light with a magnetic sample, conventional MOKE magnetometers normally work by selecting a small range of incident wave-vector values, focusing the incident light beam to a small spot, and recording the reflected intensity at that angular range by means of photodetectors. Using this approach, additional methodologies and measurements are required for full vectorial magnetic characterization. Here, we computationally investigate a Fourier-space MOKE setup, where a focused beam ellipsometer using high numerical aperture optics and a camera detector is employed to simultaneously map the intensity distribution for a wide range of incident and reflected wave vectors. We employ circularly incident polarized light and no analyzing optics, in combination with a fitting procedure of the light intensity maps to the analytical expression of the Kerr effect under linear approximation. In this way, we are able to retrieve the three unknown components of the magnetization vector as well as the material' s optical and magneto-optical constants with high accuracy and short acquisition times, with the possibility of single-shot measurements. Fourier MOKE is thus proposed as a powerful method to perform generalized magneto-optical ellipsometry for a wide range of magnetic materials and devices. info:eu-repo/grantAgreement/ES/DGA/Q-MAD info:eu-repo/grantAgreement/EC/H2020/101001290/EU/3DNANOMAG-Three-dimensional nanoscale magnetic structures This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 101001290-3DNANOMAG info:eu-repo/grantAgreement/ES/MICINN-AEI/PRTR-C17.I1 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 3.2 2023 MATERIALS SCIENCE, MULTIDISCIPLINARY 201 / 439 = 0.458 2023 Q2 T2 PHYSICS, CONDENSED MATTER 31 / 79 = 0.392 2023 Q2 T2 PHYSICS, APPLIED 62 / 179 = 0.346 2023 Q2 T2 1.345 2023 Condensed Matter Physics 2023 Q1 Electronic, Optical and Magnetic Materials 2023 Q1 6.3 2023 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Hierro-Rodríguez, A. Sanz-Hernández, D. Skoric, L. Christensen, C. N. Donnelly, C. Fernández-Pacheco Pérez, A. Universidad de Zaragoza (orcid)0000-0002-4303-9525 2004 398 Universidad de Zaragoza Dpto. Física Teórica Área Física de la Tierra 107, 17 (2023), 174420 [10 pp.] Phys. Rev. B Physical Review B 2469-9950 7886295 http://zaguan.unizar.es/record/126822/files/texto_completo.pdf Versión publicada 2934267 http://zaguan.unizar.es/record/126822/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:126822 articulos driver 2024-11-22-12:03:09 ARTICLE