Integrable impurities in Hubbard chain with the open boundary condition

Дата и время публикации : 1999-01-10T02:39:15Z

Авторы публикации и институты :
Zhan-Ning Hu (Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing, China)
Fu-Cho Pu (Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing, China)

Ссылка на журнал-издание: Europhys. Lett., 45 (4), pp. 514-519 (1999)
Коментарии к cтатье: 6 pages, Revtex, To appear in Europhysics Letters
Первичная категория: cond-mat.str-el

Все категории : cond-mat.str-el

Краткий обзор статьи: The Kondo problem of two impurities in 1D strongly correlated electron system within the framework of the open boundary Hubbard chain is solved and the impurities, coupled to the ends of the electron system, are introduced by their scattering matrices with electrons so that the boundary matrices satisfy the reflecting integrability condition. The finite size correction of the ground state energy is obtained due to the impurities. Exact expressions for the low temperature specific heat contributed by the charge and spin parts of the magnetic impurities are derived. The Pauli susceptibility and the Kondo temperature are given explicitly. The Kondo temperature is inversely proportional to the density of electrons.

Category: Physics