Observation of three-dimensional long-range order in small ion coulomb crystals in an rf trap.
作者： A. Mortensen , E. Nielsen , T. Matthey , M. Drewsen
DOI: 10.1103/PHYSREVLETT.96.103001
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摘要: Three-dimensional long-range ordered structures in smaller and near-spherically symmetric Coulomb crystals of $^{40}\mathrm{Ca}^{+}$ ions confined a linear rf Paul trap have been observed when the number exceeds $\ensuremath{\sim}1000$ ions. This result is unexpected from ground state molecular dynamics (MD) simulations, but found to be agreement with MD simulations metastable ion configurations. Previously, three-dimensional only reported Penning traps systems $\ensuremath{\sim}50 000$ or more.
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