Observation of magnetic order in a superconducting YBa2Cu3O6.6 single crystal using polarized neutron scattering
H. A. Mook, Y. Sidis, B. Fauqué, V. Balédent, P. Bourges
DOI 10.1103/PhysRevB.78.020506 · Physical Review B
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Abstract
Polarized beam neutron-scattering measurements on a highly perfect crystal of YBa2Cu3O6.6 show a distinct magnetic transition to a different phase with an onset at about 235 K, the temperature expected for the pseudogap transition. The moment is found to be about 0.1μB for each sublattice and has a correlation length of at least 75 Å. We found the critical exponent for the magnetic neutron intensity to be 2β=0.37±0.12. This is the proper range for the class of transition that has no specific-heat divergence possibly explaining why none is found at the pseudogap transition.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O6.6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 63 | Pressure not reported | unknown |
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