title: Metallic wires of lanthanum atoms inside carbon nanotubes.
authors.affiliation: Research Center for Advanced Carbon Materials, National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8565, Japan. guanlh@fjirsm.ac.cn
authors.forename: Lunhui
authors.initials: L
authors.lastname: Guan
authors.forename: Kazu
authors.initials: K
authors.lastname: Suenaga
authors.forename: Shingo
authors.initials: S
authors.lastname: Okubo
authors.forename: Toshiya
authors.initials: T
authors.lastname: Okazaki
authors.forename: Sumio
authors.initials: S
authors.lastname: Iijima