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Quantum Dynamics of Spin Wave Propagation Through Domain Walls

S. Yuan·H. De Raedt·S. Miyashita
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Abstract

Through numerical solution of the time-dependent Schrodinger equation, we demonstrate that magnetic chains with uniaxial anisotropy support stable structures, separating ferromagnetic domains of opposite magnetization. These structures, domain walls in a quantum system, are shown to remain stable if they interact with a spin wave. We find that a domain wall transmits the longitudinal component of the spin excitations only. Our results suggests that continuous, classical spin models described by LLG equation cannot be used to describe spin wave-domain wall interaction in microscopic magnetic systems.

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S. Yuan, H. De Raedt, S. Miyashita. 2006-06-21. Quantum Dynamics of Spin Wave Propagation Through Domain Walls. https://doi.org/10.1143/jpsj.75.084703

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