We investigate the magnetic ordering and dynamics of the stripe phase of La5/3Sr1/3CoO4, a material shown to have an hourglass magnetic excitation spectrum. A combination of muon-spin relaxation, nuclear magnetic resonance, and magnetic susceptibility measurements strongly suggest that the physics is determined by a partially disordered configuration of charge and spin stripes whose frustrated magnetic degrees of freedom are dynamic at high temperature and which undergo an ordering transition around 35 K with coexisting dynamics that freeze out in a glassy manner as the temperature is further reduced.
Stripe disorder and dynamics in the hole-doped antiferromagnetic insulator La5/3Sr1/3CoO4 / T., L., S. R., G., Allodi, G., Bordignon, S., Mazzani, M., DE RENZI, R., P. G., F., P. J., B., F. L., P., P., B., S. J., B., A. T., B., J. S., M., D., P.. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 89:(2014), pp. 020405(R)-1-020405(R)-6. [10.1103/PhysRevB.89.020405]
Stripe disorder and dynamics in the hole-doped antiferromagnetic insulator La5/3Sr1/3CoO4
ALLODI, Giuseppe;BORDIGNON, Sara;MAZZANI, Marcello;DE RENZI, Roberto;
2014-01-01
Abstract
We investigate the magnetic ordering and dynamics of the stripe phase of La5/3Sr1/3CoO4, a material shown to have an hourglass magnetic excitation spectrum. A combination of muon-spin relaxation, nuclear magnetic resonance, and magnetic susceptibility measurements strongly suggest that the physics is determined by a partially disordered configuration of charge and spin stripes whose frustrated magnetic degrees of freedom are dynamic at high temperature and which undergo an ordering transition around 35 K with coexisting dynamics that freeze out in a glassy manner as the temperature is further reduced.| File | Dimensione | Formato | |
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