Magnetic Silicon Fullerene

Details Magnetic Silicon Fullerene Magnetic Silicon Fullerene

2009-08-11

arxiv.org/abs/0908.1494v2

Phys. Chem. Chem. Phys., 2010, 12, 11428-11431

Physics

Condensed Matter

Materials Science

Scientific paper

10.1039/b923865d

A metal-encapsulating silicon fullerene, Eu@Si20, has been predicted by density functional theory to be by far the most stable fullerene-like silicon structure. The Eu@Si20 structure is a dodecahedron with D2h symmetry in which the europium atom occupies the center site. The calculated results show that the europium atom has a large magnetic moment of nearly 7.0 Bohr magnetons. In addition, it was found that a stable "pearl necklace" nanowire, constructed by concatenating a series of Eu@Si20 units, with the central europium atom, retains the high spin moment. The magnetic structure of the nanowire indicates potential applications in the fields of spintronics and high-density magnetic storage.

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