2017/03/31 by Zhenyue Zhu, P. A. Maksimov, Steven R. White +1 · 263 citations
Materials Science · Mathematics · Physics and Astronomy · #Advanced Condensed Matter Physics #Hamiltonian (control theory) #Magnetic and transport properties of perovskites and related materials #Mathematics #Mixing (physics) #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Spin (aerodynamics) #Thermodynamics #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.119.157201
published in Physical Review Letters 119(15), 157201 (American Physical Society) · 5+ main text, 7+ supplemental, text asymptotically close to PRL
openalex created_date 2017/08/08 · arxiv created 2017/09/14 · openalex publication_date 2017/10/11 · arxiv updated 2017/10/13 · openalex updated_date 2026/08/06
We suggest that a randomization of the pseudodipolar interaction in the spin-orbit-generated low-energy Hamiltonian of YbMgGaO4 due to an inhomogeneous charge environment from a natural mixing of Mg2+ and Ga3+ can give rise to orientational spin disorder and mimic a spin-liquid-like state. In the absence of such quenched disorder, 1/S and density matrix renormalization group calculations both show robust ordered states for the physically relevant phases of the model. Our scenario is consistent with the available experimental data, and further experiments are proposed to support it.