The effects of single-ion anisotropy on quantum criticality in a d-dimensional spin-S planar ferromagnet have been explored by means of the two time Green’s function method. We have found that the single-ion anisotropy has sensible effects on the structure of the phase diagram close to the quantum critical point. However, for values of the uniaxial crystal-field parameter below a positive threshold, the conventional magnetic-field-induced quantum critical scenario remains unchanged.
Magnetic- field- induced quantum criticality in a spin-S planar ferromagnet with single-ion anisotropy / M. T., Mercaldo; I., Rabuffo; L., De Cesare; CARAMICO D'AURIA, Alvaro. - In: THE EUROPEAN PHYSICAL JOURNAL. B, CONDENSED MATTER PHYSICS. - ISSN 1434-6028. - STAMPA. - 86:340:(2013), pp. 1-10. [10.1140/epjb/e2013-40407-6]
Magnetic- field- induced quantum criticality in a spin-S planar ferromagnet with single-ion anisotropy
CARAMICO D'AURIA, ALVARO
2013
Abstract
The effects of single-ion anisotropy on quantum criticality in a d-dimensional spin-S planar ferromagnet have been explored by means of the two time Green’s function method. We have found that the single-ion anisotropy has sensible effects on the structure of the phase diagram close to the quantum critical point. However, for values of the uniaxial crystal-field parameter below a positive threshold, the conventional magnetic-field-induced quantum critical scenario remains unchanged.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.