Staggered spin susceptibility at a two-dimensional antiferromagnetic quantum critical point

Y. Itoh

Staggered spin susceptibility at a two-dimensional antiferromagnetic quantum critical point

Strongly Correlated Electrons 2026-05-20 v2 Superconductivity

Authors: Y. Itoh

Abstract

We report on the finite temperature staggered spin susceptibility $\chi(Q)$ as a function of the mode-mode coupling constant $y_1$ in the self-consistent renormalization theory of two-dimensional antiferromagnetic spin fluctuations with zero-point quantum fluctuations just at the quantum critical point ( $y_0$ = 0). We find that the value $y_1$ = 0.1 is a criterion to classify the effect of the zero-point spin fluctuations on the temperature dependence of $\chi(Q)$ into a Curie law for weak $y_1 <$ 0.1 and a Curie-Weiss type or a power law type for strong $y_1 >$ 0.1.

Keywords

quantum critical point heisenberg spin chains magnetic materials and spin systems

Cite

@article{arxiv.2605.11965,
  title  = {Staggered spin susceptibility at a two-dimensional antiferromagnetic quantum critical point},
  author = {Y. Itoh},
  journal= {arXiv preprint arXiv:2605.11965},
  year   = {2026}
}

Comments

4 pages, 4 figures; typo correction and more references in ver.2

Related papers

View all related →