22 citations · 30 across the 3 of their papers we have counts for
3 papers
Persistent current and Drude weight in mesoscopic rings
F. Carvalho Dias, I. R. Pimentel, M. Henkel
We study the persistent current and the Drude weight of a system of spinless fermions, with repulsive interactions and a hopping impurity, on a mesoscopic ring pierced by a magneti…
Destruction of long-range antiferromagnetic order by hole doping
F. Carvalho Dias, I. R. Pimentel, R. Orbach
We study the renormalization of the staggered magnetization of a two-dimensional antiferromagnet as a function of hole doping, in the framework of the t-J model. It is shown that t…
Magnetic Properties of Weakly Doped Antiferromagnets
I. R. Pimentel, F. Carvalho Dias, L. M. Martelo +1
We study the spin excitations and the transverse susceptibility of a two-dimensional antiferromagnet doped with a small concentration of holes in the t-J model. The motion of holes…