Silicon clathrate with an f-electron system |
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Authors: | Kawaguchi T Tanigaki K Yasukawa M |
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Affiliation: | Department of Material Science, Faculty of Science, Osaka-city University, 3-3-138 Sugimoto, Sumiyoshi-ku, 558-8585 Osaka, Japan. |
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Abstract: | A novel crystal of Ba6Ce2Au4Si42 with Ba and Ce encapsulated into silicon-polyhedral clusters is self-assembled from the state of elemental mixture. Each atom in the crystal is arranged in its well-defined position with a nanoscale period, causing unique interactions between the conduction and the magnetic electrons originating from the independent sources of Ba and Ce, respectively. In this system, the long-distant magnetic f electrons can interact with each other through nanoscale spacing with isotropic three dimensionality, leading to the occurrence of a unique spontaneous spin ordering at 6.5 K. |
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