Gapped ground state in a spin-1/2 frustrated square lattice
Abstract
We present a model compound with a spin-1/2 frustrated square lattice, in which three ferromagnetic (F) interactions and one antiferromagnetic (AF) compet. Considering the effective spin-1 formed by the dominant F dimer, this square lattice can be mapped to a spin-1 spatially anisotropic triangular lattice. The magnetization curve exhibits gapped behavior indicative of a dominant one-dimensional (1D) AF correlation. In the field-induced gapless phase, the specific heat and magnetic susceptibility show a phase transition to an ordered state with 2D characteristics. These results indicate that the spin-1 Haldane state is extended to the 2D system. We demonstrate that the gapped ground state observed in the present spin-1/2 frustrated square lattice originates from the one-dimensionalization caused by frustration.
Keywords
Cite
@article{arxiv.2108.12761,
title = {Gapped ground state in a spin-1/2 frustrated square lattice},
author = {H. Yamaguchi and N. Uemoto and T. Okubo and Y. Kono and S. Kittaka and T. Sakakibara and T. Yajima and S. Shimono and Y. Iwasaki and Y. Hosokoshi},
journal= {arXiv preprint arXiv:2108.12761},
year = {2021}
}
Comments
arXiv admin note: text overlap with arXiv:2106.12126