2017/06/30 by Y. Cui, Yi Cui, Jingwen Zheng +10
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Atomic physics #Chemistry #Condensed matter physics #Crystallography #Ground state #High pressure #Magnetic and transport properties of perovskites and related materials #Magnetic field #Magnetization #Materials science #Nuclear magnetic resonance #Organic and Molecular Conductors Research #Phase (matter) #Phase transition #Physics #Quantum mechanics #Thermodynamics #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.96.205147
published as Phys. Rev. B 96, 205147 (2017) · 8 pages, 12 figures, to appear in Physical Review B
arxiv created 2017/11/15 · openalex publication_date 2017/11/27 · openalex created_date 2017/12/04 · arxiv updated 2017/12/06 · openalex updated_date 2026/08/05
We report high-pressure magnetization and 35Cl NMR studies on \ensuremathα\text\ensuremath-RuCl3 with pressure up to 1.5 GPa. At low pressures, the magnetic ordering is identified by both the magnetization data and the NMR data, where the TN shows a concave shape dependence with pressure. These data suggest stacking rearrangement along the c axis. With increasing pressure, phase separation appears prominently at P\ensuremath≥ 0.45 GPa, and the magnetic volume fraction is completely suppressed at P\ensuremath≥ 1.05 GPa. Meanwhile, a phase-transition-like behavior emerges at high pressures in the remaining volume by a sharp drop of magnetization M(T) upon cooling, with the transition temperature Tx increased to 250 K at 1 GPa. The 1/35T1 is reduced by over three orders of magnitude when cooled below 100 K. This characterizes a high-pressure, low-temperature phase with nearly absent static susceptibility and low-energy spin fluctuations. The nature of the high-pressure ground state is discussed, where a magnetically disordered state is proposed as a candidate state.