Frustrated spin model as a hard-sphere liquid

Details Frustrated spin model as a hard-sphere liquid Frustrated spin model as a hard-sphere liquid

2002-10-31

arxiv.org/abs/cond-mat/0210711v1

Phys. Rev. Lett. 90, 147203 (2003)

Physics

Condensed Matter

Statistical Mechanics

5 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.90.147203

We show that one-dimensional topological objects (kinks) are natural degrees of freedom for an antiferromagnetic Ising model on a triangular lattice. Its ground states and the coexistence of spin ordering with an extensive zero-temperature entropy can be easily understood in terms of kinks forming a hard-sphere liquid. Using this picture we explain effects of quantum spin dynamics on that frustrated model, which we also study numerically.

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