Quantum Dynamics of Spin Wave Propagation Through Domain Walls

Details Quantum Dynamics of Spin Wave Propagation Through Domain Walls Quantum Dynamics of Spin Wave Propagation Through Domain Walls

2006-06-21

arxiv.org/abs/cond-mat/0606549v1

Journal of the Physical Society of Japan, Vol. 75 No. 8, August, 2006, 084703

Physics

Condensed Matter

Materials Science

Scientific paper

10.1143/JPSJ.75.084703

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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