Pressure-induced multicriticality and electronic instability in the quasi-kagome ferromagnet URhSn

2021/03/12 by Arvind Maurya, Dilip Bhoi, Fuminori Honda +9
Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Electrical resistivity and conductivity #Electron #Fermi Gamma-ray Space Telescope #Fermi liquid theory #Fermi surface #Ferromagnetism #Instability #Materials science #Phase (matter) #Phase transition #Physics #Quantum #Quantum mechanics #Quantum, superfluid, helium dynamics #Rare-earth and actinide compounds #Superconductivity #cond-mat.str-el

paper · pdf · doi:10.1103/physrevb.104.195119

arxiv created 2021/03/12 · openalex publication_date 2021/11/10 · arxiv updated 2021/11/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

We report an unconventional class of pressure-induced quantum phase transitions, possessing two bicritical points at 6.25 GPa in URhSn. This unique transformation accompanies a Fermi surface reconstruction, demarcating competing ordered phases suitably described with a localized and itinerant description of the magnetic 5f electrons. Ferromagnetic fluctuations over a wide range of temperatures and pressures in the pressure-induced low temperature phase are evidenced by a robust T^5/3 temperature dependence of resistivity up to 11 GPa, which is a characteristic of an elusive marginal Fermi-liquid state.

Citations

• Metallic Quantum Ferromagnets
• Fermi-liquid instabilities at magnetic quantum phase transitions
• Quantum critical phenomena
• Heavy Fermions and Quantum Phase Transitions
• Superconducting phases off-electron compounds
• First Order Transitions and Multicritical Points in Weak Itinerant Ferromagnets