Half-metallic properties of atomic chains of carbon-transition metal compounds

Details Half-metallic properties of atomic chains of carbon-transition metal compounds Half-metallic properties of atomic chains of carbon-transition metal compounds

2005-04-28

arxiv.org/abs/cond-mat/0504747v2

Physics

Condensed Matter

Materials Science

11 pages, 3 figures, 1 tables

Scientific paper

10.1103/PhysRevB.72.155444

We found that magnetic ground state of one-dimensional atomic chains of carbon-transition metal compounds exhibit half-metallic properties. They are semiconductors for one spin-direction, but show metallic properties for the opposite direction. The spins are fully polarized at the Fermi level and net magnetic moment per unit cell is an integer multiple of Bohr magneton. The spin-dependent electronic structure can be engineered by changing the number of carbon and type of transition metal atoms. These chains, which are stable even at high temperature and some of which keep their spin-dependent electronic properties even under moderate axial strain, hold the promise of potential applications in nanospintronics.

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