2D orbital-like magnetic order in ${\rm La_{2-x}Sr_xCuO_4}$

Details 2D orbital-like magnetic order in ${\rm La_{2-x}Sr_xCuO_4}$ 2D orbital-like magnetic order in ${\rm La_{2-x}Sr_xCuO_4}$

2010-05-19

arxiv.org/abs/1005.3406v1

Phys. Rev. Lett., 105, 027004 (2010)

Physics

Condensed Matter

Superconductivity

4 figures, submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.105.027004

In high temperature copper oxides 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 here report the observation below 120 K of a similar magnetic ordering in the archetypal cuprate ${\rm La_{2-x}Sr_xCuO_4}$ (LSCO) system for x=0.085. In contrast to the previous reports, the magnetic ordering in LSCO is {\it\bf only} short range with an in-plane correlation length of $\sim$ 10 \AA\ 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.

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