2022-07-27 オークリッジ国立研究所(ORNL)
螺旋状のスピン液体のコンセプトが、ハニカム格子材料の広いクラスで実行可能であることを示している。
これは、量子コンピューティングのような将来のアプリケーションで使用されるかもしれないスピンテクスチャとフラクトンのような新しい励起を探索するための新しいルートをコミュニティに提供します。
＜関連情報＞
- https://www.ornl.gov/news/magnetic-quantum-material-broadens-platform-probing-next-gen-information-technologies
- https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.128.227201
ハニカム格子上のスパイラルスピン液体 Spiral Spin Liquid on a Honeycomb Lattice
Shang Gao, Michael A. McGuire, Yaohua Liu, Douglas L. Abernathy, Clarina dela Cruz, Matthias Frontzek, Matthew B. Stone, and Andrew D. Christianson
Physical Review Letters Published 1 June 2022
DOI:https://doi.org/10.1103/PhysRevLett.128.227201
ABSTRACT
Spiral spin liquids are correlated paramagnetic states with degenerate propagation vectors forming a continuous ring or surface in reciprocal space. On the honeycomb lattice, spiral spin liquids present a novel route to realize emergent fracton excitations, quantum spin liquids, and topological spin textures, yet experimental realizations remain elusive. Here, using neutron scattering, we show that a spiral spin liquid is realized in the van der Waals honeycomb magnet FeCl3. A continuous ring of scattering is directly observed, which indicates the emergence of an approximate U(1) symmetry in momentum space. Our work demonstrates that spiral spin liquids can be achieved in two-dimensional systems and provides a promising platform to study the fracton physics in spiral spin liquids.
