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We study the magneto-optical Kerr effect (MOKE) of the two-dimensional heterostructure CrI3/In2Se3/CrI3 by using density functional theory calculations and symmetry analysis. The spontaneous polarization in the In2Se3 ferroelectric layer…

Materials Science · Physics 2023-05-12 Ning Ding , Kunihiro Yananose , Carlo Rizza , Feng-Ren Fan , Shuai Dong , Alessandro Stroppa

We combine ultrafast X-ray diffraction (UXRD) and time-resolved Magneto-Optical Kerr Effect (MOKE) measurements to monitor the strain pulses in laser-excited TbFe2/Nb heterostructures. Spatial separation of the Nb detection layer from the…

Ultra-thin magnetic dielectric films are of prime importance due to their applications for nanophotonics and spintronics. Here, we propose an efficient method for the magneto-optical investigation of ultra-thin magnetic films which allows…

Instrumentation and Detectors · Physics 2018-02-13 O. V. Borovkova , H. Hashim , M. A. Kozhaev , S. A. Dagesyan , A. Chakravarty , M. Levy , V. I. Belotelov

We present a detailed study on domain imaging, Kerr effect magnetometry (MOKE) and magnetoresistance (MR), for a series of 20 nm Co$_{73.8}$Fe$_{16.2}$B$_{10}$ thin films, both as-deposited (amorphous) and annealed (crystalline). By…

The transverse magneto-optical Kerr effect (TMOKE) in magnetite-based magneto-plasmonic crystals is studied experimentally and theoretically. We analyze angle-resolved TMOKE spectra from two types of structures where noble metallic stripes…

The magneto-optic Kerr effect (MOKE), which describes the rotation and ellipticity of linearly polarized light upon reflection, is conventionally associated with time-reversal symmetry breaking. Here, we theoretically demonstrate that a…

Mesoscale and Nanoscale Physics · Physics 2026-04-28 Wenhao Liang , Akito Daido , K. T. Law

Two-dimensional magnetic materials exhibit strong magneto-optic effects and high tunability by electrostatic gating, making them very attractive for new magneto-photonic devices. Here, we characterize the magneto-optic Kerr effect (MOKE)…

Mesoscale and Nanoscale Physics · Physics 2026-01-07 Freddie Hendriks , Alexander N. Rudenko , Malte Roesner , Marcos H. D. Guimaraes

One striking property of the Landau level spectrum of a Weyl semimetal (WSM) is the existence of a chiral Landau level, in which the electrons propagate unidirectionally along the magnetic field. This linearly dispersive level influences…

Mesoscale and Nanoscale Physics · Physics 2021-01-04 Jean-Michel Parent , René Côté , Ion Garate

We describe a two-color pump-probe scanning magneto-optical Kerr effect (MOKE) microscope which we have developed to investigate electron spin phenomena in semiconductors at cryogenic temperatures with picosecond time and micrometer spatial…

Instrumentation and Detectors · Physics 2015-06-17 T. Henn , T. Kiessling , W. Ossau , L. W. Molenkamp , K. Biermann , P. V. Santos

Recently magnetic storage and magnetic memory have shifted towards the use of magnetic thin films with perpendicular magnetic anisotropy (PMA). Understanding the magnetic damping in these materials is crucial, but normal Ferromagnetic…

Mesoscale and Nanoscale Physics · Physics 2018-03-14 Dustin M. Lattery , Delin Zhang , Jie Zhu , Paul Crowell , Jian-Ping Wang , Xiaojia Wang

Recently, all-optical magnetization control has been garnering considerable attention in realizing next-generation ultrafast magnetic information devices. Here, employing a magneto-optical Kerr effect (MOKE) microscope, we observed the…

Materials Science · Physics 2023-04-04 Ryunosuke Takahashi , Takuo Ohkochi , Daisuke Kan , Yuichi Shimakawa , Hiroki Wadati

We report the engineering of the polar magnetooptical (MO) Kerr effect in perpendicularly magnetized L10-MnAl epitaxial films with remarkably tuned magnetization, strain, and structural disorder by varying substrate temperature (Ts) during…

Materials Science · Physics 2016-11-15 Lijun Zhu , Liane Brandt , Jianhua Zhao

We study the magneto-optical Kerr effect (MOKE) in SrRuO$_3$ thin films, uncovering wide regimes of wavelength, temperature, and magnetic field where the Kerr rotation is not simply proportional to the magnetization but instead displays…

Strongly Correlated Electrons · Physics 2020-11-04 F. Michael Bartram , Sopheak Sorn , Zhuolu Li , Kyle Hwangbo , Shengchun Shen , Felix Frontini , Liqun He , Pu Yu , Arun Paramekanti , Luyi Yang

We describe a simple magneto-optical experiment and introduce a magneto-optical Kramers-Kronig analysis (MOKKA) that together allow extracting the complex dielectric function for left- and right-handed circular polarizations in a broad…

Strongly Correlated Electrons · Physics 2015-03-18 Julien Levallois , Ievgeniia Nedoliuk , Iris Crassee , Alexey B. Kuzmenko

Polarized light microscopy, as a contrast-enhancing technique for optically anisotropic materials, is a method well suited for the investigation of a wide variety of effects in solid-state physics, as for example birefringence in crystals…

Instrumentation and Detectors · Physics 2017-12-19 Matthias Lange , Stefan Guénon , Felix Lever , Reinhold Kleiner , Dieter Koelle

Magneto-optical sensors including spin noise spectroscopies and magneto-optical Kerr effect microscopies are now ubiquitous tools for materials characterization that can provide new understanding of spin dynamics, hyperfine interactions,…

Quantum Physics · Physics 2022-02-10 Yun-Yi Pai , Claire E. Marvinney , Chengyun Hua , Raphael C. Pooser , Benjamin J. Lawrie

We demonstrate theoretically a large transverse magneto-optical Kerr effect (TMOKE) in subwavelength gratings consisting of alternating magneto-insulating and nonmagnetic dielectric nanostripes. The reflectivity of the grating reaches…

Optics · Physics 2015-06-18 Ivan S. Maksymov , Jessica Hutomo , Mikhail Kostylev

Large surface plasmon polariton assisted enhancement of the magneto-optical activity has been observed in the past, through spectral measurements of the polar Kerr rotation in Co hexagonal antidot arrays. Here, we report a strong thickness…

It is demonstrated that a static in-plane magnetic field is generated in a ferromagnetic film by p-polarised light obliquely incident on the film. This phenomenon can be called inverse transverse magneto-optical Kerr effect. The femtosecond…

Other Condensed Matter · Physics 2015-06-03 V. I. Belotelov , A. K. Zvezdin

The magneto-optical Kerr effect (MOKE) in the extreme ultraviolet (EUV) regime has helped to elucidate some of the key processes that lead to the manipulation of magnetism on ultrafast timescales. However, as we show in this paper, the…