Spin gap in a quasi-1D S=1/2 antiferromagnet K2CuSO4Cl2

Abstract

Electron spin resonance experiments in the quasi-1D S=1/2 antiferromagnet K${}_2$CuSO${}_4$Cl${}_2$ reveal opening of a gap in absence of magnetic ordering, as well as an anisotropic shift of the resonance magnetic field. These features of magnetic excitation spectrum are explained by a crossover between a gapped spinon-type doublet ESR formed in a 1D antiferromagnet with uniform Dzyaloshinskii-Moriya interaction and a Larmor-type resonance of a quasi-1D Heisenberg system

arXiv comment9 pages, 12 figures

References in corpus (12)

• Electron Spin Resonance in S=1/2 antiferromagnetic chains
• Multispinon continua at zero and finite temperature in a near-ideal Heisenberg chain
• Spin-orbital effects in magnetized quantum wires and spin chains
• Modes of magnetic resonance in the spin liquid phase of Cs2CuCl4
• Quantum spin chains with frustration due to Dzyaloshinskii-Moriya interactions
• Transverse spectral functions and Dzyaloshinskii-Moriya interactions in XXZ spin chains
• Magnetic resonance in the ordered phases of the 2D frustrated quantum magnet Cs2CuCl4
• Electron spin resonance in a model S=1/2 chain antiferromagnet with a uniform Dzyaloshinskii--Moriya interaction
• Spin correlations and Dzyaloshinskii-Moriya interaction in Cs${}_2$CuCl${}_4$
• Finite-temperature correlations in a quantum spin chain near saturation
• High-field magnetic resonance of spinons and magnons in a triangular lattice S=1/2 antiferromagnet Cs2CuCl4
• Phase diagram of weakly coupled Heisenberg spin chains subject to a uniform Dzyaloshinskii-Moriya interaction

Cited by in corpus (3)

• Electron Spin Resonance of the Interacting Spinon Liquid
• Dimensional reduction and incommensurate dynamic correlations in the $S=\frac{1}{2}$ triangular-lattice antiferromagnet Ca${}_3$ReO${}_5$Cl${}_2$
• Anisotropy-induced soliton excitation in magnetized strong-rung spin ladders