Real-space Recursion Method Research Articles

Tight-binding model for ferromagnetic domain walls in 3d transition metals

In this work a quantum-theoretical calculation of ferromagnetic domain walls in 3d transition metals is presented. The model is based on a tight-binding description of the system and the 3d electronic structure is obtained self-consistently by use of the real-space recursion method. A salient feature of this model is that both the orientation and the magnitude of the atomic magnetic moments are free to vary. This is in sharp contrast with classical studies which are based on the a priori assumption that the magnitude of the moment is constant. Preliminary numerical results for a ferromagnetic chain are given.