Charge-order pattern of the low-temperature phase from a monoclinic single domain of NaV2O5 uniquely determined by resonant x-ray scattering.
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.
Ohwada
Kenji
K
Synchrotron Radiation Research Center (SPring-8), Japan Atomic Energy Research Institute, Kohto, Hyogo 679-5148, Japan. ohwada@spring8.or.jp
Fujii
Yasuhiko
Y
Katsuki
Yuya
Y
Muraoka
Jiro
J
Nakao
Hironori
H
Murakami
Youichi
Y
Sawa
Hiroshi
H
Ninomiya
Emi
E
Isobe
Masahiko
M
Ueda
Yutaka
Y