Abstract
ion behavior is one of the heavily discussed topics in physical and material fields because of its unclear behavior and high potential in materials application. To provide a breakthrough in this field, comprehensive research that connects the real space and the reciprocal lattice (momentum) space is effective. Here, we investigated the ion behavior in two-dimensional layered system , which shows the disorder-order phase transition at 200 K. Inelastic x-ray scattering revealed a large change of the ion dynamics at the phase transition. It is expected that the complex interactions are involved in the behavior of ions intercalated in the negatively charged layers by charge transfer. However, Monte Carlo simulations using a simple combination of repulsive forces between ions well reproduce the characteristic temperature dependence of the anisotropic diffuse scattering. These insights provide a unified understanding in controlling the intercalated system.
- Received 8 November 2019
- Revised 8 March 2020
- Accepted 10 March 2020
DOI:https://doi.org/10.1103/PhysRevB.101.094108
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