Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1815384 | Physica B: Condensed Matter | 2007 | 4 Pages |
Abstract
Different types of magnetic phase diagrams are analyzed with the scope to detect signs of a crossover between the classical (thermal fluctuations) regime and the critical (quantum fluctuations) one. In systems where TN,C is driven down to the mK range by alloying Ce-ligands (x), clear changes in the magnetic phase are observed once TN,C<2K. On the contrary, when TN vanishes at finite temperature (driven by pressure or x) the phase boundaries do not reach temperatures lower than â3K. In a third type of phase diagrams, characterized by a weak TN(x,p) dependence, signs of phase separation are suspected. Distinctive properties of each mentioned group are recognized and some exemplary cases analyzed in detail. Those properties coincide indicating a crossover temperature slightly above 2Â K.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
J.G. Sereni,