Rod motifs in neutron scattering in spin ice

Abstract

In classical and quantum spin ice, rod-like features appear in the neutron scattering structure factor when the pinchpoints characteristic of classical spin ice get washed out. We show that these features do not indicate the absence of spin correlations between planes perpendicular to the rods. Rather, they arise because unpolarised neutron scattering is largely insensitive to the three-dimensional correlations which are present throughout. We present two very simple models which exhibit a pristine incarnation of such scattering rods. This provides a physical picture for their appearance, elucidates the role played by monopole excitations and identifies conditions conducive to their observation.

arXiv comment(5 pages, 3 figures)

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• Spectroscopic signatures of fractionalization in octupolar quantum spin ice
• Probing Flat Band Physics in Spin Ice Systems via Polarized Neutron Scattering
• Orientation Dependence of the Magnetic Phase Diagram of Yb${}_2$Ti${}_2$O${}_7$
• A pseudofermion functional renormalization group study of dipolar-octupolar pyrochlore magnets
• Finite Temperature Dynamics in 0-Flux and $\pi$-Flux Quantum Spin Ice: Self-Consistent Exclusive Boson Approach
• Analytical theory of pyrochlore cooperative paramagnets
• Magnetic Field Response of Dipolar-Octupolar Quantum Spin Ice
• Flux roughening in spin ice with mixed $\pm J$ interactions
• Quantum Spin Liquids in Pyrochlore Magnets With Non-Kramers Local Moments