Field-induced quantum phase in a frustrated zigzag-square lattice

Abstract

This study presents the experimental realization of a spin-1/2 zigzag-square lattice in a verdazyl-based complex, namely ($m$-Py-V-2,6-F${}_2$)$[$Cu(hfac)${}_2]$. Molecular orbital calculations suggest the presence of five types of frustrated exchange couplings. Our observations reveal an incremental increase in the magnetization curve beyond a critical field, signifying a phase transition from the antiferromagnetic ordered state to a quantum state characterized by a 1/2 plateau. This intriguing behavior arises from the effective stabilization of a zigzag chain by the external fields. These results provide evidence for field-induced dimensional reduction in a zigzag-square lattice attributed to the effects of frustration.

arXiv comment5 pages, 4 figures

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Cited by in corpus (2)

• Realization of a triangular spin necklace in a verdazyl-based Ni complex
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