IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Pomeranchuk instabilities with reentrant behaviour
Autor/es:
P. RODRÍGUEZ PONTE; D.C. CABRA; N. GRANDI
Lugar:
Buenos Aires
Reunión:
Congreso; Autumn College on Non-Equilibrium Quantum Systems; 2011
We study the effects of spin-antisymmetric interactions on the stability of the Landau-Fermi liquid description. In particular we focus on the type of interactions proposed by Varma \textit{et al} to describe the hidden order transition in $URu_2Si_2$. In the presence of a magnetic field this type of interactions produce an enhanced region of instabilities of the Pomeranchuk type. \\ More interestingly, we find a reentrant behaviour as a function of the magnetic field $h$, similar to that found in recent experiments, in certain regions of the $V$-$\mu$ phase space.