| DOI | Trouver le DOI : https://doi.org/10.1103/PhysRevB.66.024505 |
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| Auteur | Rechercher : Stock, C.; Rechercher : Buyers, W. J. L.1; Rechercher : Tun, Z.1; Rechercher : Liang, R.; Rechercher : Peets, D.; Rechercher : Bonn, D.; Rechercher : Hardy, W. N.; Rechercher : Taillefer, L. |
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| Affiliation | - Conseil national de recherches Canada. Centre canadien de faisceaux de neutrons du CNRC
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| Format | Texte, Article |
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| Résumé | 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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| Date de publication | 2002-06-28 |
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| Maison d’édition | American Physical Society |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 12328851 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | e2ba41f9-c68f-4f23-947b-95ae9de84533 |
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| Enregistrement créé | 2009-09-10 |
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| Enregistrement modifié | 2023-10-04 |
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