Rattling oscillation in strong coupling superconductor KOs2O6
We would like to investigate rattling motion of a K ion in beta-pyrochlore superconductor KOs2O6, in which rattling is considered to induce strong coupling superconductivity in this compound. By single crystal neutron diffraction, we want to clarify detailed characteristics of K oscillation including anharmonicity and anisotropy, and how it changes on passing through Tc, and additional first order phase transition Tp inside the superconducting phase. This result will provide us indispensable information to deepen our understanding on relationship between rattling and superconductivity in AOs2O6.
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KANEKO Koji; CHAPON Laurent; KOZA Michael Marek; MUTKA Hannu and NILSEN Goran. (2014). Rattling oscillation in strong coupling superconductor KOs2O6. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-14-255