A Rotating-Valence-Bond scenario for the 2D Antiferromagnetic Heisenberg Model

Дата и время публикации : 1996-01-25T10:17:13Z

Авторы публикации и институты :
German Sierra
Miguel A. Martin-Delgado

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: RevTex file, 3 pages, 3 PS figures available upon request
Первичная категория: cond-mat

Все категории : cond-mat

Краткий обзор статьи: We propose that the valence bonds forming the ground state of the 2D-AF Heisenberg model on a square lattice may rotate under the effect of the antiferromagnetic background. To test this idea we apply a real space renormalization group approach to construct a rotating-valence-bond ground state anstaz. Our results are analytic and valid for any value of the spin S of the AF-magnet, which allow us to perfom semiclassical expansions of the energy and the staggered magnetization.

Category: Physics