Pomeranchuk instabilities in multicomponent lattice systems at finite Temperature

C.A. LAMAS; D.C. CABRA; N. GRANDI

INTERNATIONAL JOURNAL OF MODERN PHYSICS B

WORLD SCIENTIFIC PUBL CO PTE LTD

Lugar: London, UK; Año: 2011 vol. 25 p. 3539 - 3555

0217-9792

In the present paper we extend the method to detect Pomeranchuk instabilities in lattice systems developed previously in [1] and [2] to study more general situations. In its extended version, the method can be applied to multiband systems including spin or any other internal degree of freedom and, more importantly, it allows to include finite temperature effects. This provides a powerful technique to study microscopic realistic models relevant to {it e.g.} the Fermi liquid to Nematic transition extensively studied in connection with different materials such as cuprates, ruthenates, etc.