CoIr-carbon complexes with magnetic anisotropies larger than 0.2 eV: a density-functional-theory prediction

Autor: Xiao, Ruijuan, Kuz'min, Michael D., Koepernik, Klaus, Richter, Manuel
Rok vydání: 2010
Předmět:
Druh dokumentu: Working Paper
DOI: 10.1063/1.3520488
Popis: We report a density-functional study of the heteronuclear CoIr dimer adsorbed on benzene or graphene. In either case CoIr prefers an upright position above the center of a carbon hexagon with the Co atom next to it. The Ir atom stays away from the carbon ring and thus preserves its free-atom-like properties. This results in a very large magnetic anisotropy of more than 0.2 eV per dimer. So high a value should suffice for long-term data storage at the temperature of liquid nitrogen.
Databáze: arXiv