Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2005-09-08
Phys. Rev. Lett. 96, 197001 (2006)
Physics
Condensed Matter
Strongly Correlated Electrons
3 figures
Scientific paper
10.1103/PhysRevLett.96.197001
One of the leading issues in high-$T_C$ superconductors is the origin of the pseudogap phase in underdoped cuprates. Using polarized elastic neutron diffraction, we identify a novel magnetic order in the YBa$_2$Cu$_3$O$_{6+x}$ system. The observed magnetic order preserves translational symmetry as proposed for orbital moments in the circulating current theory of the pseudogap state. To date, it is the first direct evidence of an hidden order parameter characterizing the pseudogap phase in high-$T_C$ cuprates.
Bourges Ph.
Chaud X.
Fauque Benoit
Hinkov Vladimir
Lin Tai-Chia
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