2018/06/30 by G. Simutis, N. Barbero, K. Rolfs +15 · 1 citation
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Hydrostatic equilibrium #Hydrostatic pressure #Magnetic and transport properties of perovskites and related materials #Materials science #Muon spin spectroscopy #Nuclear magnetic resonance #Order (exchange) #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Relaxation (psychology) #Thermodynamics #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.98.104421
published as Phys. Rev. B 98, 104421 (2018)
openalex created_date 2018/07/10 · openalex publication_date 2018/09/17 · arxiv created 2018/10/10 · arxiv updated 2018/10/11 · openalex updated_date 2026/08/06
The low-temperature magnetic properties of polycrystalline Na2IrO3, a candidate material for the realization of a quantum spin-liquid state, were investigated by means of muon-spin relaxation and nuclear magnetic resonance methods under chemical and hydrostatic pressure. The Li-for-Na chemical substitution promotes an inhomogeneous magnetic order, whereas hydrostatic pressure (up to 3.9 GPa) results in an enhancement of the ordering temperature TN. In the first case, the inhomogeneous magnetic order suggests either short- or long-range correlations of broadly distributed j=\phantom\rule0.16em0ex\textonehalf Ir4+ magnetic moments, reflecting local disorder. The increase of TN under applied pressure points at an increased strength of three-dimensional interactions arising from interlayer compression.