Line-Graph Approach to Spiral Spin Liquids

Shang Gao, Ganesh Pokharel, Andrew F. May, Joseph A.M. Paddison, Chris Pasco, Yaohua Liu, Keith M. Taddei, Stuart Calder, David G. Mandrus, Matthew B. Stone, Andrew D. Christianson

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Competition among exchange interactions is able to induce novel spin correlations on a bipartite lattice without geometrical frustration. A prototype example is the spiral spin liquid, which is a correlated paramagnetic state characterized by subdimensional degenerate propagation vectors. Here, using spectral graph theory, we show that spiral spin liquids on a bipartite lattice can be approximated by a further-neighbor model on the corresponding line-graph lattice that is nonbipartite, thus broadening the space of candidate materials that may support the spiral spin liquid phases. As illustrations, we examine neutron scattering experiments performed on two spinel compounds, ZnCr2Se4 and CuInCr4Se8, to demonstrate the feasibility of this new approach and expose its possible limitations in experimental realizations.

Original languageEnglish
Article number237202
JournalPhysical Review Letters
Volume129
Issue number23
DOIs
StatePublished - Dec 2 2022

Funding

We acknowledge helpful discussions with Jyong-Hao Chen. This work was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. This research used resources at the Spallation Neutron Source (SNS) and the High Flux Isotope Reactor (HFIR); both are DOE Office of Science User Facilities operated by the Oak Ridge National Laboratory (ORNL). G. P. acknowledges support from the Gordon and Betty Moore Foundation’s EPiQS Initiative, Grant No. GBMF9069.

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