Fragmented Spin Liquid and Shadow Pinch Points in Dipole-Octupole Pyrochlore Spin Systems

We study the classical dipole-octupole pyrochlore spin systems in an external magnetic field along the $[111]$ direction. We identify an intermediate fragmented spin liquid phase that precedes full spin saturation, characterized by the coexistence of three phenomena: U(1) spin liquid on the Kagome planes, spontaneous $\mathbb{Z}_2$ symmetry breaking, and partial spin polarization from explicit symmetry breaking. We show that even without dipolar interactions, the dipolar components can form a spin liquid driven by the octupolar spin liquid. The physics manifests itself experimentally as shadow pinch points: low-intensity pinch points underlying the strong Bragg peaks. We discuss how these discoveries are directly relevant to various experiments on dipole-octupole pyrochlore materials, including neutron scattering, magnetization, and magnetostriction.

• Publication year

  2025

• Venue

  Unknown venue

• Publication date

  2025-09-11

• Fields of study

  Physics

• Identifiers
  arXiv 2509.09205
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

• Two-Peak Heat Capacity Accounts for Rln(2) Entropy and Ground State Access in the Dipole-Octupole Pyrochlore Ce_{2}Hf_{2}O_{7}.

  2025cited by this paper
• Magnetization and magnetostriction measurements of the dipole-octupole quantum spin ice candidate Ce2Hf2O7

  2025cited by this paper
• Classical symmetry enriched topological orders and distinct monopole charges for dipole-octupole spin ices

  2025cited by this paper
• Towards a global phase diagram of Ce-based dipolar-octupolar pyrochlore magnets under magnetic fields

  2025cited by this paper
• Magnetic field response of dipolar-octupolar quantum spin ice

  2024cited by this paper
• Experimentally tunable QED in dipolar-octupolar quantum spin ice

  2023cited by this paper
• Dipolar-octupolar correlations and hierarchy of exchange interactions in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mi mathvariant="normal">Ce</mml:mi> <mml:mn>2</mml:mn>

  2023influential reference
• Topological phases of matter

  2010cited by this paper
• SPIN ICE

  2009cited by this paper
• Introduction to Frustrated Magnetism

  year unknowncited by this paper

• Exact nematic and mixed magnetic phases driven by competing orders on the pyrochlore lattice

  2025cites this paper