Scaling of the magnetic response in doped antiferromagnets

Abstract

A theory of the anomalous $\omega /T$ scaling of the dynamic magnetic response in cuprates at low doping is presented. It is based on the memory function representation of the dynamical spin suceptibility in a doped antiferromagnet where the damping of the collective mode is constant and large, whereas the equal-time spin correlations saturate at low $T$. Exact diagonalization results within the t-J model are shown to support assumptions. Consequences, both for the scaling function and the normalization amplitude, are well in agreement with neutron scattering results.

arXiv comment4 pages, 4 figures

References in corpus (3)

• Nodal metallic behavior of lightly-doped La${}_{2-x}$Sr${}_x$CuO${}_4$
• Magnetic fluctuations and resonant peak in cuprates: a microscopic theory
• Universal Charge and Spin Response in Optimally Doped Antiferromagnets

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