Weiss, N.Cren, T.Epple, M.Rusponi, S.Baudot, G.Rohart, S.Tejeda, A.Repain, V.Rousset, S.Ohresser, P.Scheurer, F.Bencok, P.Brune, H.2009-04-142009-04-142009-04-14200510.1103/PhysRevLett.95.157204https://infoscience.epfl.ch/handle/20.500.14299/37201WOS:0002324434000587392We report on the magnetic properties of two-dimensional Co nanoparticles arranged in macroscopically phase-coherent superlattices created by self-assembly on Au(788). Our particles have a density of 26 Tera/in(2) (1 Tera=10(12)), are monodomain, and have uniaxial out-of-plane anisotropy. The distribution of the magnetic anisotropy energies has a half width at half maximum of 17%, a factor of 2 more narrow than the best results reported for superlattices of three-dimensional nanoparticles. Our data show the absence of magnetic interactions between the particles. Co/Au(788) thus constitutes an ideal model system to explore the ultimate density limit of magnetic recording.Magnetism of Nanostructurestext::journal::journal article::research article