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arXiv · 1207.1038

Evidence for Intra-Unit-Cell magnetic order in Bi2Sr2CaCu2O8+d

S. De Almeida-Didry·Y. Sidis·V. Baledent·F. Giovannelli·I. Monot-Laffez·P. Bourges
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Abstract

Polarized elastic neutron scattering measurements have been performed in the bilayer copper oxide system Bi2Sr2CaCu2O8+d, providing evidence for an intra unit cell (IUC) magnetic order inside the pseudo-gap state. That shows time reversal symmetry breaking in that state as already reported in Bi2Sr2CaCu2O8+d through dichroism in circularly polarized photoemission experiments. The magnetic order displays the same characteristic features as the one previously reported for monolayer HgBa2CuO4+d and bilayer YBa2Cu3O6+x, demonstrating that this genuine phase is ubiquitous of the pseudo-gap of high temperature copper oxide materials.

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S. De Almeida-Didry, Y. Sidis, V. Baledent, F. Giovannelli, I. Monot-Laffez, P. Bourges. 2012-07-04. Evidence for Intra-Unit-Cell magnetic order in Bi2Sr2CaCu2O8+d. https://doi.org/10.1103/physrevb.86.020504

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