We present the results of an extensive p,muSR reinvestigation of the doping dependence of the AF order in polycrystalline YBa2Cu3O6+x samples (0 < x < 0.4), prepared by a topotactic-like technique which yields oxygen equilibrated and ordered pairs of YBCO samples of well defined oxygen order conditions. For x > 0.2, we detected a spin freezing correlated to the charge freezing of the holes in the CuO2 planes. The data may be fitted to a model of size-dependent reduction of the staggered magnetization implied in a stripe scenario. The hole concentration dependence of these freezing phenomena is mapped onto the phase diagram of YBa2Cu3O6+x.
The freezing of spin and charge at low temperature in YBa2Cu3O6+x / Sanna, S.; Allodi, Giuseppe; DE RENZI, Roberto. - In: SOLID STATE COMMUNICATIONS. - ISSN 0038-1098. - 126:(2003), pp. 85-91. [10.1016/S0038-1098(02)00664-6]
The freezing of spin and charge at low temperature in YBa2Cu3O6+x
ALLODI, Giuseppe;DE RENZI, Roberto
2003-01-01
Abstract
We present the results of an extensive p,muSR reinvestigation of the doping dependence of the AF order in polycrystalline YBa2Cu3O6+x samples (0 < x < 0.4), prepared by a topotactic-like technique which yields oxygen equilibrated and ordered pairs of YBCO samples of well defined oxygen order conditions. For x > 0.2, we detected a spin freezing correlated to the charge freezing of the holes in the CuO2 planes. The data may be fitted to a model of size-dependent reduction of the staggered magnetization implied in a stripe scenario. The hole concentration dependence of these freezing phenomena is mapped onto the phase diagram of YBa2Cu3O6+x.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
