Dynamical Magnetic Susceptibility for the $t$-$J$ Model

Details Dynamical Magnetic Susceptibility for the $t$-$J$ Model Dynamical Magnetic Susceptibility for the $t$-$J$ Model

1996-07-05

arxiv.org/abs/cond-mat/9607034v1

Physics

Condensed Matter

3 pages LaTeX, postscript figures included, submitted as contribution to SCES' 96, to appear in Physica B

Scientific paper

10.1016/S0921-4526(96)00663-1

We present results for the {\em dynamical}\/ magnetic susceptibility of the $t$-$J$ model, calculated with the dynamical mean field theory. For $J=0$ we find enhanced ferromagnetic correlations but an otherwise relatively $\vec{q}$-independent dynamical magnetic susceptibility. For $J>0$ the explicit antiferromagnetic exchange leads to a dynamic spin structure factor with the expected peak at the antiferromagnetic Bragg point.

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