A muon spin rotation study of hydrogen in YBa2Cu3O
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Authors: | H Glückler Ch Niedermayer G Nowitzke A Golnik R Simon E Recknagel A Weidinger J Erxmeyer J I Budnick |
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Institution: | 1. Fakult?t für Physik, Universit?t Konstanz, D-7750, Konstanz, Germany 3. Hahn-Meitner-Institut Berlin, Glienikerstr. 100, D-1000, Berlin 39, Germany 4. Physics Department, University of Connecticut, 06268, Storrs, CT, USA
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Abstract: | Superconducting YBa2Cu3O
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samples were doped with hydrogen and investigated by the muon spin rotation technique. For hydrogen concentrations above
a thresholdx, which depends on the oxygen stoichiometry, we find a well defined precession signal in zero external field. This is a clear
indication of magnetic ordering in these samples. In samples with a smaller hydrogen content no magnetic ordering was found.
For these samples however, the depolarization rate σ(T→0) as measured in a transverse external field depends strongly on the hydrogen content. Our data are consistent with the
assumption that hydrogen acts as an electron donor, filling the hole states in YBa2Cu3O
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