| DOI | Resolve DOI: https://doi.org/10.1103/PhysRevB.66.024505 |
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| Author | Search for: Stock, C.; Search for: Buyers, W. J. L.1; Search for: Tun, Z.1; Search for: Liang, R.; Search for: Peets, D.; Search for: Bonn, D.; Search for: Hardy, W. N.; Search for: Taillefer, L. |
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| Affiliation | - National Research Council of Canada. NRC Canadian Neutron Beam Centre
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| Format | Text, Article |
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| Abstract | We present elastic and inelastic neutron-scattering results on highly oxygen-ordered YBa₂Cu₃O₆.₅ ortho-II. We find no evidence of the presence of long-ranged ordered magnetic moments to a sensitivity of ~0.003muB, an order of magnitude smaller than has been suggested in theories of orbital or d-density-wave (DDW) currents. The absence of sharp elastic peaks rules out the existence of well-correlated static DDW currents in our crystal. We cannot exclude the possibility that a broad peak may exist with extremely short-range DDW correlations. For less ordered or more doped crystals it is possible that disorder may lead to static magnetism. We have also searched for the large normal-state spin gap that is predicted to exist in an ordered DDW phase. Instead of a gap we find that the Q-correlated spin susceptibility persists to the lowest energies studied, ~6 meV. Our results are only compatible with the coexistence of superconductivity and orbital currents if the latter are dynamic and do not participate in a sharp phase transition to a highly ordered DDW state. |
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| Publication date | 2002-06-28 |
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| Publisher | American Physical Society |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 12328851 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | e2ba41f9-c68f-4f23-947b-95ae9de84533 |
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| Record created | 2009-09-10 |
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| Record modified | 2023-10-04 |
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