Magnetic Order in the Pseudogap Phase of High-TC Superconductors

B. Fauqué; Y. Sidis; V. Hinkov; S. Pailhès; C. T. Lin; X. Chaud; P. Bourges

doi:10.1103/PhysRevLett.96.197001

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Magnetic Order in the Pseudogap Phase of High-TC Superconductors

B. Fauqué, Y. Sidis, V. Hinkov, S. Pailhès, C. T. Lin, X. Chaud, P. Bourges

DOI 10.1103/PhysRevLett.96.197001 · Physical Review Letters

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Abstract

One of the leading issues in high-TC superconductors is the origin of the pseudogap phase in underdoped cuprates. Using polarized elastic neutron diffraction, we identify a novel magnetic order in the YBa2Cu3O6+x system. The observed magnetic order preserves translational symmetry of the lattice as proposed for orbital moments in the circulating current theory of the pseudogap state. To date, it is the first direct evidence of a hidden order parameter characterizing the pseudogap phase in high-TC cuprates.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O6+x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown