title: Charge-order pattern of the low-temperature phase from a monoclinic single domain of NaV2O5 uniquely determined by resonant x-ray scattering.
abstract: The present resonant x-ray scattering has been performed on a monoclinically split single domain of NaV(2)O(5). The observation of a critically enhanced contrast between V(4+) and V(5+) ions has led us to the unequivocal conclusion of the charge-order pattern of the low-temperature phase of NaV(2)O(5) below T(c) = 35 K. In spite of the possible four types of configuration of the zigzag-type charge-order patterns in the ab plane (A,A',B and B'), the stacking sequence along the c axis is determined as the AAA'A' type by comparison with model calculations.
authors.affiliation: Synchrotron Radiation Research Center (SPring-8), Japan Atomic Energy Research Institute, Kohto, Hyogo 679-5148, Japan. ohwada@spring8.or.jp
authors.forename: Kenji
authors.initials: K
authors.lastname: Ohwada
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Fujii
authors.forename: Yuya
authors.initials: Y
authors.lastname: Katsuki
authors.forename: Jiro
authors.initials: J
authors.lastname: Muraoka
authors.forename: Hironori
authors.initials: H
authors.lastname: Nakao
authors.forename: Youichi
authors.initials: Y
authors.lastname: Murakami
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Sawa
authors.forename: Emi
authors.initials: E
authors.lastname: Ninomiya
authors.forename: Masahiko
authors.initials: M
authors.lastname: Isobe
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Ueda