title: Magnetic silicon fullerene.
abstract: A metal-encapsulating silicon fullerene, Eu@Si(20), has been predicted by density functional theory to be by far the most stable fullerene-like silicon structure. The Eu@Si(20) structure is a dodecahedron with D(2h) 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@Si(20) 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.
authors: Department of Physics, and Hebei Advanced Thin Film Laboratory, Hebei Normal University, Shijiazhuang 050016, Hebei, China.
authors: Jing
authors: J
authors: Wang
authors: Ying
authors: Y
authors: Liu
authors: You-Cheng
authors: YC
authors: Li