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arXiv · 1005.3406

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

V. Balédent·B. Fauqué·Y. Sidis·N. B. Christensen·S. Pailhès·K. Conder·E. Pomjakushina·J. Mesot·P. Bourges
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Abstract

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 Å 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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V. Balédent, B. Fauqué, Y. Sidis, N. B. Christensen, S. Pailhès, K. Conder, E. Pomjakushina, J. Mesot, P. Bourges. 2010-05-19. 2D orbital-like magnetic order in ${\rm La_{2-x}Sr_xCuO_4}$. https://doi.org/10.1103/physrevlett.105.027004

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