TY - JOUR
T1 - Photoemission spectroscopy study of the hole-doped Haldane chain Y2-xSrxBaNiO5
AU - Fagot-Revurat, Y.
AU - Malterre, D.
AU - Lannuzel, F. X.
AU - Janod, E.
AU - Payen, C.
AU - Gavioli, Luca
AU - Bertran, F.
PY - 2003
Y1 - 2003
N2 - In this paper, we present photoemission experiments on the hole-doped
Haldane chain compound Y2-xSrxBaNiO5. By using the photon energy
dependence of the photoemission cross section, we identified the
symmetry of the first ionisation states (d type). Hole doping in this
system leads to a significant increase in the spectral weight at the top
of the valence band without any change in the vicinity of the Fermi
energy. This behavior, never observed in other charge transfer oxides,
could result from the Ni-3d-O-2P hybridization enhancement due to the
shortening of the relevant Ni-O distance with doping. (C) 2002 Elsevier
Science B.V. All rights reserved.
AB - In this paper, we present photoemission experiments on the hole-doped
Haldane chain compound Y2-xSrxBaNiO5. By using the photon energy
dependence of the photoemission cross section, we identified the
symmetry of the first ionisation states (d type). Hole doping in this
system leads to a significant increase in the spectral weight at the top
of the valence band without any change in the vicinity of the Fermi
energy. This behavior, never observed in other charge transfer oxides,
could result from the Ni-3d-O-2P hybridization enhancement due to the
shortening of the relevant Ni-O distance with doping. (C) 2002 Elsevier
Science B.V. All rights reserved.
KW - charge transfer insulator
KW - hole doping
KW - photoemission spectroscopy
KW - strongly correlated systems
KW - charge transfer insulator
KW - hole doping
KW - photoemission spectroscopy
KW - strongly correlated systems
UR - http://hdl.handle.net/10807/20733
U2 - 10.1016/S0168-583X(02)01684-1
DO - 10.1016/S0168-583X(02)01684-1
M3 - Article
SN - 0168-583X
VL - 200
SP - 242
EP - 247
JO - NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION B, BEAM INTERACTIONS WITH MATERIALS AND ATOMS
JF - NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION B, BEAM INTERACTIONS WITH MATERIALS AND ATOMS
ER -