Gutzwiller wavefunction in the three-band Hubbard model: A variational Monte Carlo study

Дата и время публикации : 1993-07-17T09:53:33Z

Авторы публикации и институты :
A. Oguri
T. Asahta
S. Maekawa

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 18 pages (RevTeX), 8 figures (postscript) appended, for remaining 5 figures contact
Первичная категория: cond-mat

Все категории : cond-mat

Краткий обзор статьи: The Gutzwiller wave function for the three-band Hubbard model on a two dimensional CuO$_2$ plane is studied by using the variational Monte Carlo (VMC) method in the limit $U_d to infty$, where $U_d$ is the Coulomb repulsion between holes on a Cu site. The VMC results for the energy and the fraction of $d$-holes are compared with those of the Rice-Ueda type Gutzwiller approximation (GA). The difference between the VMC and the GA results are most pronounced at half-filling, and away from half-filling the two results agree well in both the hole-doped and the electron-doped cases. The doping dependence of the momentum distribution function is also studied.

Category: Physics