New preprint on Kagome magnet

Phase diagram of Y-Kapelasite from ultrasounds and specific heat

In a new preprint, we explore the magnetization process of the distorted Kagome lattice found in Y-Kapelasite. This material shows a magnetization plateau at a peculiar fraction of the saturated magnetization: 1/6 or 1/9, still debated. We determine the diagram of this plateau and study its low-lying excitations with specific heat and ultrasounds. We also uncover a new phase (phase C), sitting right above the plateau. This new phase is ungapped and is reminiscent of a supersolid state predicted theoretically. This work is part of M. Schuchard PhD work, and has been performed in collaboration with T. Klein and C. Marcenat at Institut Néel, and CEA-Grenoble respectively.

Reference: M. Schuchard et al., arxiv.2611.04675 (2026)