title: Two-dimensional orbital-like magnetic order in the high-temperature La(2-x)Sr(x)CuO4 superconductor.
abstract: In high-temperature copper oxide superconductors, a novel magnetic order associated with the pseudogap phase has been identified in two different cuprate families over a wide region of temperature and doping. We report here the observation below 120 K of a similar magnetic ordering in the archetypal cuprate La(2-x)Sr(x)CuO4 (LSCO) system for x=0.085. In contrast with the previous reports, the magnetic ordering in LSCO is only short range with an in-plane correlation length of ∼10  A and is bidimensional (2D). Such a less pronounced order suggests an interaction with other electronic instabilities. In particular, LSCO also exhibits a strong tendency towards stripes ordering at the expense of the superconducting state.
authors.affiliation: Laboratoire Léon Brillouin, CEA-CNRS, CEA Saclay, 91191 Gif-sur-Yvette Cedex, France.
authors.forename: V
authors.initials: V
authors.lastname: Balédent
authors.forename: B
authors.initials: B
authors.lastname: Fauqué
authors.forename: Y
authors.initials: Y
authors.lastname: Sidis
authors.forename: N B
authors.initials: NB
authors.lastname: Christensen
authors.forename: S
authors.initials: S
authors.lastname: Pailhès
authors.forename: K
authors.initials: K
authors.lastname: Conder
authors.forename: E
authors.initials: E
authors.lastname: Pomjakushina
authors.forename: J
authors.initials: J
authors.lastname: Mesot
authors.forename: P
authors.initials: P
authors.lastname: Bourges