Two-Dimensional Orbital-Like Magnetic Order in the High-Temperature La2−xSrxCuO4 Superconductor

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

doi:10.1103/PhysRevLett.105.027004

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Two-Dimensional Orbital-Like Magnetic Order in the High-Temperature La2−xSrxCuO4 Superconductor

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

DOI 10.1103/PhysRevLett.105.027004 · Physical Review Letters

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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 La2−xSrxCuO4 (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 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.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	22	Pressure not reported	unknown
La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	22	Pressure not reported	unknown