Curvature effects on phase transitions in chiral magnets
Kostiantyn V. Yershov, Volodymyr P. Kravchuk, Denis D. Sheka, U. Roessler
Abstract
Periodical equilibrium states of magnetization exist in chiral ferromagnetic films, if the constant of antisymmetric exchange (Dzyaloshinskii-Moriya interaction) exceeds some critical value. Here, we demonstrate that this critical value can be significantly modified in curved film. The competition between symmetric and antisymmetric exchange interactions in a curved film can lead to a new type of domain wall which is inclined with respect to the cylinder axis. The wall structure is intermediate between Bloch and N\'eel ones. The exact analytical solutions for phase boundary curves and the new domain wall are obtained.
Topics & Concepts
Antisymmetric relationCondensed matter physicsDomain wall (magnetism)FerromagnetismCurvatureMagnetizationPhysicsCylinderPhase (matter)MagnetConstant (computer programming)Domain (mathematical analysis)Magnetic fieldGeometryQuantum mechanicsMathematical physicsMathematicsMathematical analysisComputer scienceProgramming languageMagnetic properties of thin filmsMagnetic Properties and ApplicationsTheoretical and Computational Physics