Influence of curvature on the dynamical susceptibility of bent nanotubes
Eduardo Saavedra, S. Castillo-Sepúlveda, R.M. Corona, D. Altbir, Juan Escrig, Vagson L. Carvalho‐Santos
Abstract
In this work we analyze the influence of curvature on the dynamic properties of the magnetization in bent nanotubes. Our results show that both the resonance frequencies and the number of resonant peaks have a strong dependence on the ground state of the magnetization created by the curvature. Our results can be understood from the analysis of the effective anisotropy and the Dzyaloshinskii–Moriya interaction (DMI) induced by curvature. The ability to control the dynamic properties of these curved ferromagnets makes them excellent candidates for developing applications based on resonant modes of spin waves.
Topics & Concepts
CurvatureBent molecular geometryCondensed matter physicsMagnetizationAnisotropyPhysicsGround stateFerromagnetismSpin waveFerromagnetic resonanceMaterials scienceOpticsQuantum mechanicsGeometryMagnetic fieldMathematicsComposite materialMagnetic properties of thin filmsElectromagnetic wave absorption materialsMetamaterials and Metasurfaces Applications