title: Time-resolved coherent diffraction of ultrafast structural dynamics in a single nanowire.
abstract: The continuing effort to utilize the unique properties present in a number of strongly correlated transition metal oxides for novel device applications has led to intense study of their transitional phase state behavior. Here we report on time-resolved coherent X-ray diffraction measurements on a single vanadium dioxide nanocrystal undergoing a solid-solid phase transition, using the SACLA X-ray Free Electron Laser (XFEL) facility. We observe an ultrafast transition from monoclinic to tetragonal crystal structure in a single vanadium dioxide nanocrystal. Our findings demonstrate that the structural change occurs in a number of distinct stages attributed to differing expansion modes of vanadium atom pairs.
authors.affiliation: Research Institute for Electronic Science, Hokkaido University , Sapporo 001-0021, Japan.
authors.forename: Marcus C
authors.initials: MC
authors.lastname: Newton
authors.forename: Mayu
authors.initials: M
authors.lastname: Sao
authors.forename: Yuta
authors.initials: Y
authors.lastname: Fujisawa
authors.forename: Rena
authors.initials: R
authors.lastname: Onitsuka
authors.forename: Tomoya
authors.initials: T
authors.lastname: Kawaguchi
authors.forename: Kazuya
authors.initials: K
authors.lastname: Tokuda
authors.forename: Takahiro
authors.initials: T
authors.lastname: Sato
authors.forename: Tadashi
authors.initials: T
authors.lastname: Togashi
authors.forename: Makina
authors.initials: M
authors.lastname: Yabashi
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Ishikawa
authors.forename: Tetsu
authors.initials: T
authors.lastname: Ichitsubo
authors.forename: Eiichiro
authors.initials: E
authors.lastname: Matsubara
authors.forename: Yoshihito
authors.initials: Y
authors.lastname: Tanaka
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Nishino