High energy spin excitations in the quantum spin liquid candidate Zn-barlowite probed by resonant inelastic x-ray scattering

A quantum spin liquid is a novel ground state that can support long-range entanglement between magnetic moments, resulting in exotic spin excitations involving fractionalized \(S=\frac{1}{2}\) spinons. Here, we measure the excitations in single crystals of the spin liquid candidate Zn-barlowite usin...

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Bibliographic Details
Published in:arXiv.org 2021-08
Main Authors: Smaha, Rebecca W, Pelliciari, Jonathan, Jarrige, Ignace, Bisogni, Valentina, Breidenbach, Aaron T, Jiang, Jack Mingde, Wen, Jiajia, Hong-Chen, Jiang, Lee, Young S
Format: Article
Language:English
Subjects:
Electrons
Entanglement
Excitation spectra
Inelastic scattering
Magnetic moments
Single crystals
Spin liquid
Wave dispersion
X-ray scattering
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Summary:A quantum spin liquid is a novel ground state that can support long-range entanglement between magnetic moments, resulting in exotic spin excitations involving fractionalized \(S=\frac{1}{2}\) spinons. Here, we measure the excitations in single crystals of the spin liquid candidate Zn-barlowite using resonant inelastic X-ray scattering. By analyzing the incident polarization and temperature dependences, we deduce a clear magnetic scattering contribution forming a broad continuum that surprisingly extends up to \(\sim\)200 meV (\(\sim\)14\(J\), where \(J\) is the magnetic exchange). The excitation spectrum reveals that significant contributions arise from multiple pairs of spinons and/or antispinons at high energies.
ISSN:2331-8422
DOI:10.48550/arxiv.2108.11506