Pressure tuning of the helical antiferromagnetic state in
Phys. Rev. B 114, 024422 – Published 27 July, 2026
DOI: https://doi.org/10.1103/4ql7-snlx
Abstract
is a helical antiferromagnetic heavy-fermion system with an ordering temperature . The pressure effect on the magnetic properties of via electrical resistivity and calorimetry is studied. is quickly suppressed to absolute zero at the critical pressure of , suggesting the presence of an antiferromagnetic quantum critical point. The temperature-field phase diagrams are examined under different pressures. The evolution of the phase diagram under pressure demonstrates that the physical properties of , which are already fascinating at ambient pressure, exhibit even greater complexity under applied pressure.