A. Foussats

activity

19982014

most citedLarge-N expansion based on the Hubbard operator path integral representation and its application to the t-J model II. The case for finite

J

38 citations · 181 across the 15 of their papers we have counts for

collaborators

Showing 2004Show all

3 papers · 1 filter

cond-mat.supr-con2004★ 13 cited

Cooperative effect of phonons and electronic correlations for superconductivity in cobaltates

A. Foussats, A. Greco, M. Bejas +1

We propose that unconventional superconductivity in hydrated sodium cobaltate $N a_{x} C o O_{2}$ results from an interplay of electronic correlations and electron-phonon interactions. On…

cond-mat.str-el2004★ 38 cited

Large-N expansion based on the Hubbard operator path integral representation and its application to the t-J model II. The case for finite $J$

Adriana Foussats, Andrés Greco

We have introduced a new perturbative approach for $t - J - V$ model where Hubbard operators are treated as fundamental objects. Using our vertices and propagators we have developed a…

cond-mat.str-el2004★ 12 cited

Spin exchange and superconductivity in a $t - J^{'} - V$ model for two-dimensional quarter-filled systems

Andres Greco, Jaime Merino, Adriana Foussats +1

The effect of antiferromagnetic spin fluctuations on two-dimensional quarter-filled systems is studied theoretically. An effective $t - J^{'} - V$ model on a square lattice which accounts…

Cooperative effect of phonons and electronic correlations for superconductivity in cobaltates

Large-N expansion based on the Hubbard operator path integral representation and its application to the t-J model II. The case for finite J

Spin exchange and superconductivity in a t−J′−V model for two-dimensional quarter-filled systems

Large-N expansion based on the Hubbard operator path integral representation and its application to the t-J model II. The case for finite $J$

Spin exchange and superconductivity in a $t - J^{'} - V$ model for two-dimensional quarter-filled systems