Antiferromagnetic ordering in superconducting YBa2Cu3O6.5

Commensurate antiferromagnetic ordering has been observed in the superconducting high- Tc cuprate YBa2Cu3O6.5 ( Tc = 55 K) by polarized and unpolarized elastic neutron scattering. The magnetic peak intensity exhibits a marked enhancement at Tc. Zero-field muon-spin-resonance experiments demonstrate...

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Veröffentlicht in:	Physical review letters 2001-04, Vol.86 (18), p.4100-4103
Hauptverfasser:	Sidis, Y, Ulrich, C, Bourges, P, Bernhard, C, Niedermayer, C, Regnault, L P, Andersen, N H, Keimer, B
Format:	Artikel
Sprache:	eng
Online-Zugang:	Volltext
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Zusammenfassung:	Commensurate antiferromagnetic ordering has been observed in the superconducting high- Tc cuprate YBa2Cu3O6.5 ( Tc = 55 K) by polarized and unpolarized elastic neutron scattering. The magnetic peak intensity exhibits a marked enhancement at Tc. Zero-field muon-spin-resonance experiments demonstrate that the staggered magnetization is not truly static but fluctuates on a nanosecond time scale. These results point towards an unusual spin density wave state coexisting with superconductivity.
ISSN:	0031-9007
DOI:	10.1103/PhysRevLett.86.4100