Sagnac interferometer for time-resolved magneto-optical measurements

Heo, Hyeokjun; Kim, Sang Woo; Jeong, Yungi; Park, Hangyeol; Jang, Joonho

doi:10.1063/5.0073908

Cited by 2 publications

(2 citation statements)

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“…Moreover, by replacing the CW 1550 nm laser to a pulsed one, Heo et al developes a time-resolved zero-area Sagnac interferometer (TR-ZASI) for magneto-optical measurements (see Fig. 14a) [202]. As shown in Fig.…”

Section: Other Technical Advancesmentioning

confidence: 99%

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Ferromagnetic Resonance in Two-dimensional van der Waals Magnets: A Probe for Spin Dynamics

Tang¹,

Alahmed²,

Mahdi³

et al. 2023

Preprint

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The discovery of atomic monolayer magnetic materials has stimulated intense research activities in the two-dimensional (2D) van der Waals (vdW) materials community. The field is growing rapidly and there has been a large class of 2D vdW magnetic compounds with unique properties, which provides an ideal platform to study magnetism in the atomically thin limit. In parallel, based on tunneling magnetoresistance and magneto-optical effect in 2D vdW magnets and their heterostructures, emerging concepts of spintronic and optoelectronic applications such as spin tunnel field-effect transistors and spin-filtering devices are explored. While the magnetic ground state has been extensively investigated, reliable characterization and control of spin dynamics play a crucial role in designing ultrafast spintronic devices. Ferromagnetic resonance (FMR) allows direct measurements of magnetic excitations, which provides insight into the key parameters of magnetic properties such as exchange interaction, magnetic anisotropy, gyromagnetic ratio, spin-orbit coupling, damping rate, and domain structure. In this review article, we present an overview of the essential progress in probing spin dynamics of 2D vdW magnets using FMR techniques. Given the dynamic nature of this field, we focus mainly on the broadband FMR, optical FMR, and spin-torque FMR, and their applications in studying prototypical 2D vdW magnets including CrX3 (X = Cl, Br, I), Fe5GeTe2, and Cr2Ge2Te6. We conclude with the recent advances in laboratory-and synchrotron-based FMR techniques and their opportunities to broaden the horizon of research pathways into atomically thin magnets.

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Section: Other Technical Advancesmentioning

confidence: 99%

“…Phase of the Fe50Co50 spin precession in proximity to the FMR condition of Ni81Fe19 with fiedl applied along the easy axis of Fe50Co50. Panels a-c are adapted from Ref [202]…”

mentioning

confidence: 99%