ISSN:
1573-7357
Keywords:
75.25, +z
;
75.30. Gw
;
76.60. Lz
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The antiferromagnetic state in the CuO2-bilayers of PrBa2 Cu3O6+x is usually assumed to be similar to the one in YBa2Cu3O6. One evidence for this is the similarity of the NMR-spectra of the Cu(2)-sites (planes) in both materials. We reinvestigated the NMR-spectra in PrBa2Cu3O6+x-crystals and observed below 2 K two additional, broad peaks centered roughly at 110 and 250 MHz. The signal is only present after applying a field larger than 5 T below 2.0 K. The frequency and temperature dependence of the relaxation rates allows us to ascribe the signal to the Cu(2)-sites. The signal vanishes irreversibly above 2.0 K and reversibly in fields above 0.5 T. Its intensity versus field shows at all frequencies a narrow peak near −0.2 T, for the field antiparallel to the one inducing the state, which shows the presence of a net polarisation of the spin system.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00768424
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