Anisotropic magnetization dynamics in Fe5GeTe2 at room temperature

Abstract

The determination of Lande's g-factor and the damping constant is central to extracting crucial information about the spin-spin and spin-orbit interactions in magnetically ordered systems. In insulating compounds based on 3d elements, the spin-orbit interaction can be effectively probed by investigating the ground state of the corresponding free 3d ion within the crystalline environment. For metallic systems, the problem is non-trivial because of additional band structure effects. Here, we investigate the anisotropic magnetization dynamics in bulk single crystalline Fe5GeTe2, a van der Waals 2D itinerant ferromagnet at room temperature, using broadband ferromagnetic resonance spectroscopy. Strikingly, contrary to the results of ab-initio calculations, we do not observe any intrinsic anisotropy of magnetization damping close to room temperature, suggesting diminished role of spin-orbit interaction. However, there is a sizable anisotropy in the Lande's g factor near room temperature which is attributed to anisotropic critical spin fluctuations.

References in corpus (15)

• Discovery of intrinsic ferromagnetism in 2D van der Waals crystals
• The design and verification of Mumax3
• Identification of the dominant precession damping mechanism in Fe, Co, and Ni by first-principles calculations
• Radiative damping in wave guide based FMR measured via analysis of perpendicular standing spin waves in sputtered Permalloy films
• Physical properties and thermal stability of Fe5GeTe2 single crystals
• Giant anisotropy of Gilbert damping in epitaxial CoFe films
• Tuning Magnetic Order in the van der Waals Metal Fe5GeTe2 by Cobalt Substitution
• Magnetic critical behavior of the van der Waals Fe5GeTe2 crystal with near room temperature ferromagnetism
• Magnetism and Spin Dynamics in Room-Temperature van der Waals Magnet Fe${}_5$GeTe${}_2$
• Wavenumber-dependent Gilbert damping in metallic ferromagnets
• Skyrmionic Spin Structures in Layered Fe5GeTe2 Up To Room Temperature
• Coexistence of Merons with Skyrmions in the Centrosymmetric van der Waals Ferromagnet Fe5GeTe2
• Spin Dynamics in van der Waals Magnetic Systems
• A spin dynamics study in layered van der Waals single crystal, Cr${}_2$Ge${}_2$Te${}_6$
• Mechanisms behind large Gilbert damping anisotropies

Cited by in corpus (6)

• Magnetic Anisotropy in Two-dimensional van der Waals Magnetic Materials and Their Heterostructures: Importance, Mechanisms, and Opportunities
• Orbital-excitation-dominated magnetization dissipation and quantum oscillation of Gilbert damping in Fe films
• Symmetry-driven Intrinsic Nonlinear Pure Spin Hall Effect
• Anisotropic electron-phonon coupling and chiral phonons in van der Waals room temperature ferromagnet Fe${}_5$GeTe${}_2$
• Quenching the Non-Collinear Spin Order in High-Tc Layered Ferromagnet Fe5GeTe2
• Magnetic resonance and microwave resistance modulation in van der Waals colossal-magnetoresistance material