Dimensional reduction and incommensurate dynamic correlations in the [Formula: see text] triangular-lattice antiferromagnet Ca₃ReO₅Cl₂.

ABSTRACT: The observation of spinon excitations in the [Formula: see text] triangular antiferromagnet Ca₃ReO₅Cl₂ reveals a quasi-one-dimensional (1D) nature of magnetic correlations, in spite of the nominally 2D magnetic structure. This phenomenon is known as frustration-induced dimensional reduction. Here, we present high-field electron spin resonance spectroscopy and magnetization studies of Ca₃ReO₅Cl₂, allowing us not only to refine spin-Hamiltonian parameters, but also to investigate peculiarities of its low-energy spin dynamics. We argue that the presence of the uniform Dzyaloshinskii-Moriya interaction (DMI) shifts the spinon continuum in momentum space and, as a result, opens a zero-field gap at the Γ point. We observed this ga

SUBMITTER: Zvyagin SA 

PROVIDER: S-EPMC9588769 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature