2010/09/07 by Ka-Ming Tam, Adam J. Hitchcock, Tam, Ka-Ming +4
Economics, Econometrics and Finance · Physics and Astronomy · #Advanced Condensed Matter Physics #Complex Systems and Time Series Analysis #Disordered Systems and Neural Networks (cond-mat.dis-nn) #FOS: Physical sciences #Statistical Mechanics (cond-mat.stat-mech) #Theoretical and Computational Physics #cond-mat.dis-nn #cond-mat.stat-mech
paper · pdf · doi:10.48550/arxiv.1009.1272
7 pages, 4 figures
arxiv created 2010/09/07 · openalex publication_date 2010/09/07 · arxiv updated 2010/09/08 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The glassy behavior observed in the pyrochlore magnet Y2Mo2O7, where the magnetic Mo4+ ions interact predominantly via isotropic nearest neighbor antiferromagnetic exchange, possibly with additional weak disorder, is a distinct class of spin glass systems where frustration is mostly geometrical. A model proposed to describe such a spin glass behavior is the Heisenberg model on a pyrochlore lattice with random but strictly antiferromagnetic exchange disorder. In this paper, we provide compelling numerical evidence from extensive Monte Carlo simulations which show that the model exhibits a finite temperature spin glass transition and thus is a realization of a spin glass induced by random weak disorder from spin liquid. From our results, we are led to suggest that the spin glass state of Y2Mo2O7 is driven by effective strong disorder.