Codimension-two spiral spin liquid in the effective honeycomb-lattice compound Cs 3 Fe 2 Cl 9

Physical review. B./Physical review. B 2026 Open access

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Authors: Shang Gao, Chris Pasco, Otkur Omar, Qiang Zhang, Daniel M. Pajerowski, Feng Ye, Matthias Frontzek, Andrew F. May, M. B. Stone, Andrew D Christianson
DOI: 10.1103/zm32-s2xz
Cited by: 0
References: 75

Abstract

A codimension-two spiral spin-liquid is a correlated paramagnetic state with one-dimensional ground state degeneracy hosted within a three-dimensional lattice. Here, via neutron scattering experiments and numerical simulations, we establish the existence of a codimension-two spiral spin-liquid in the effective honeycomb-lattice compound Cs$_3$Fe$_2$Cl$_9$, which demonstrates a novel path to spiral spin-liquids by overcoming the long-standing impediment of weak further-neighbor interactions. In the long-range ordered regime, competing spiral and spin density wave orders emerge as a function of applied magnetic field, among which a possible order-by-disorder transition is identified.

Fields of Study & Subjects

Advanced Condensed Matter Physics Theoretical and Computational Physics

Publication details

Journal / source
Physical review. B./Physical review. B
Publisher
American Physical Society (APS)
Volume
113
Issue
14
Publication date
2 March 2026
Language
EN