科研之友
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摘要
We studied single crystals of BaV13O18, in which V ions with an average valence of + 2.62 (3d(2.38)) form a quasi-fcc lattice. We found that the ground state of the stoichiometric crystal is insulating, whereas that of the off-stoichiometric crystal is metallic with a large effective mass. This metallic state can be explained by the Kondo coupling between the magnetic moment existing at the lone V ion and itinerant carriers in the V tetramers.
- 出版日期2014-4-1
