title: Spiral spin order of self-assembled Co nanodisk arrays.
abstract: Spin order in hexagonal close packed cobalt nanodisk rows is quantitatively determined by off-axis electron holography. Periodic variation in the density of the local magnetic flux shows features of a spiral spin arrangement along the row axis, resulting from a tilted magnetic moment of nanoparticles with respect to the nanodisk axis.
authors.affiliation: Department of Physics, Beijing Normal University, Beijing 100875, People's Republic of China. ygao@bnu.edu.cn
authors.forename: Youhui
authors.initials: Y
authors.lastname: Gao
authors.forename: Yuping
authors.initials: Y
authors.lastname: Bao
authors.forename: Alec B
authors.initials: AB
authors.lastname: Pakhomov
authors.forename: Daisuke
authors.initials: D
authors.lastname: Shindo
authors.forename: Kannan M
authors.initials: KM
authors.lastname: Krishnan