The spin-1/2 antiferromagnetic Heisenberg model on a Kagome lattice is geometrically frustrated, which is expected to promote the formation of many-body quantum entangled states. The most sought-after among these is the quantum spin liquid phase, but magnetic analogs of liquid, solid, and supersolid phases may also occur, producing fractional plateaus in the magnetization. Here, we investigate the experimental realization of these predicted phases in the Kagome material YCu3(OD)6+xBr3-x (x=0.5). By combining thermodynamic and Raman spectroscopic techniques, we provide evidence for fractionalized spinon excitations and observe the emergence of a 1/9 magnetization plateau. These observations establish YCu3(OD)6+xBr3-x as a model material for exploring the 1/9 plateau phase.
@article{arxiv.2311.11619,
title = {One-ninth magnetization plateau stabilized by spin entanglement in a kagome antiferromagnet},
author = {Sungmin Jeon and Dirk Wulferding and Youngsu Choi and Seungyeol Lee and Kiwan Nam and Kee Hoon Kim and Minseong Lee and Tae-Hwan Jang and Jae-Hoon Park and Suheon Lee and Sungkyun Choi and Chanhyeon Lee and Hiroyuki Nojiri and Kwang-Yong Choi},
journal= {arXiv preprint arXiv:2311.11619},
year = {2023}
}
Comments
to appear in Nature Physics, 33 pagses, 15 figures