5 papers
Bose-Einstein condensation of magnons
M. Crisan, D. Bodea, I. Tifrea +1
We use the Renormalization Group method to study the Bose-Einstein condensation of the interacting dilute magnons which appears in three dimensional spin systems in magnetic field.…
Non-Fermi liquid behavior of the electrical resistivity at the ferromagnetic quantum critical point
D. Bodea, M. Crisan, I. Grosu +1
We propose a model for the non-Fermi behavior in the proximity of the quantum phase transition induced by the strong polarization of the electrons due to local magnetic moments. Th…
Finite - temperature quantum phase transition in d - waves superconductors
M. Crisan, D. Bodea, I. Grosu +1
The zero temperature d - wave superconductor phase transition theory given in the case of T=0 for two - dimensional superconductors (I. Herbut, PRL {\bf 85}, 1532 (2000)) is genera…
Specific heat of a Fermi system near ferromagnetic quantum phase transition
I. Grosu, D. Bodea, M. Crisan
We calculate the specific heat for an interacting Fermi system near the ferromagnetic phase transition using the Renormalization Group method. The temperature dependence of the spe…
Fluctuation contribution to the specific heat in non-Fermi models for superconductivity
I. Tifrea, I. Grosu, M. Crisan
We investigate the fluctuation contribution to the specific heat of a two-dimensional superconductor with a non-Fermi normal state described by a Anderson Green's function $G(k,iω)…